1Which constitutional provision protects against unreasonable searches and seizures?
Article III, Section 2 of the 1987 Philippine Constitution.
2Which constitutional provision protects privacy of communication and correspondence?
Article III, Section 3 of the 1987 Constitution, subject to its lawful exceptions.
3Which constitutional provision protects persons under custodial investigation?
Article III, Section 12 of the 1987 Constitution.
4What rights must be explained to a person under custodial investigation?
The right to remain silent and the right to competent and independent counsel, preferably of the person's choice.
5May a person under custodial investigation waive the right to remain silent and counsel orally?
No. A valid waiver must be in writing and signed in the presence of counsel.
6What happens to a confession obtained in violation of Article III, Section 12?
It is inadmissible in evidence against the person concerned.
7What is the purpose of Republic Act No. 7438?
To define and protect the rights of persons arrested, detained, or under custodial investigation and impose duties on investigating officers.
8What does RA 7438 require regarding an arrested person's right to counsel?
The person must be assisted by competent and independent counsel during custodial investigation.
9What should investigators do when a suspect cannot afford counsel?
Provide competent and independent counsel in accordance with the Constitution and RA 7438.
10Can a lawyer who merely appears after an uncounseled interrogation automatically validate the earlier confession?
No. Subsequent appearance does not automatically cure an earlier constitutional violation.
11What is the significance of the right to remain silent?
The suspect cannot be compelled to provide testimonial self-incriminating answers during custodial questioning.
12Does the privilege against self-incrimination generally prohibit collection of all physical evidence?
No. It primarily protects against compelled testimonial self-incrimination, subject to other constitutional safeguards.
13What is custodial investigation?
Questioning initiated by law enforcement after a person is taken into custody or otherwise significantly deprived of freedom in connection with a suspected offense.
14Can custodial investigation protections apply before formal arrest?
Yes. They may apply when questioning has become custodial in substance.
15What is the significance of a suspect's request for counsel during custodial questioning?
Questioning must respect the suspect's right to counsel and the applicable constitutional safeguards.
16What is an extrajudicial confession?
An acknowledgment of guilt made outside judicial proceedings.
17What is a judicial confession?
An acknowledgment of guilt made in a judicial proceeding under the applicable procedural rules.
18Can an extrajudicial confession alone support conviction without independent evidence of the crime?
No. Rule 133 requires independent evidence of the corpus delicti.
19What is the fruit-of-the-poisonous-tree doctrine?
A principle excluding evidence derived from an unconstitutional act unless a recognized exception applies.
20What is the independent-source doctrine?
Evidence may be admissible when obtained through a genuinely independent lawful source rather than the constitutional violation.
21What is the inevitable-discovery doctrine?
A recognized exception under which evidence may be admitted when it would inevitably have been discovered through lawful means.
22What is the attenuation doctrine?
A principle permitting evidence when the connection between the illegality and its discovery has become sufficiently remote or interrupted.
23What is consent search?
A warrantless search based on voluntary and valid consent by a person authorized to give it.
24Does mere failure to resist police officers necessarily establish voluntary consent to search?
No. Voluntary consent must be established from the circumstances.
25What is a stop-and-frisk search?
A limited protective pat-down based on specific and articulable facts supporting a reasonable belief that a person is armed and dangerous.
26Can a stop-and-frisk search automatically become a general search for evidence?
No. Its scope is limited by the protective justification and constitutional requirements.
27What is the moving-vehicle exception to the warrant requirement?
A recognized exception allowing a vehicle search under applicable probable-cause and mobility requirements.
28Does a routine checkpoint automatically authorize a full intrusive vehicle search?
No. More intrusive searches require an independent lawful basis.
29What is the general rule on visual inspection at a lawful checkpoint?
A limited routine visual inspection may be permitted, subject to constitutional safeguards.
30What is the purpose of a writ of habeas corpus?
To inquire into the legality of a person's detention or restraint and provide relief when it is unlawful.
31Does habeas corpus ordinarily determine whether an accused is guilty of the charged offense?
No. It principally addresses the legality of detention or restraint.
32What is the writ of amparo?
A judicial remedy protecting rights to life, liberty, and security against unlawful acts or omissions involving extralegal killings, enforced disappearances, or threats thereof.
33What is the writ of habeas data?
A judicial remedy protecting privacy in relation to life, liberty, or security against unlawful gathering, collecting, or storing of personal information under the governing rule.
34What is the distinction between habeas corpus and amparo?
Habeas corpus focuses on unlawful detention; amparo addresses specified threats or violations of life, liberty, and security.
35What is the distinction between amparo and habeas data?
Amparo addresses specified threats or violations; habeas data addresses unlawful personal-data activities affecting protected rights.
36What is an enforced disappearance?
A deprivation of liberty involving state agents or persons acting with state authorization, support, or acquiescence, followed by concealment or refusal to acknowledge the deprivation, under applicable law.
37Which Philippine law criminalizes enforced or involuntary disappearance?
Republic Act No. 10353.
38What is the purpose of RA 10353?
To define and penalize enforced or involuntary disappearance and provide preventive and protective safeguards.
39What is the constitutional right to a speedy disposition of cases?
The right to resolution of cases before judicial, quasi-judicial, or administrative bodies without unjustified delay.
40What is the distinction between speedy trial and speedy disposition?
Speedy trial concerns criminal trial proceedings; speedy disposition applies more broadly to cases before judicial, quasi-judicial, and administrative bodies.
41What constitutional provision guarantees the right to bail?
Article III, Section 13 of the 1987 Constitution.
42What constitutional provision guarantees the presumption of innocence?
Article III, Section 14(2) of the 1987 Constitution.
43What constitutional provision protects against double jeopardy?
Article III, Section 21 of the 1987 Constitution.
44What constitutional provision prohibits excessive fines and cruel, degrading, or inhuman punishment?
Article III, Section 19 of the 1987 Constitution.
45Scenario: Officers interrogate an arrested suspect without counsel and obtain a written confession. What is the principal evidentiary issue?
The confession may be inadmissible for violating custodial investigation rights.
46Scenario: Police search a private home solely because an anonymous caller alleges drugs are inside. What is the principal constitutional problem?
An anonymous allegation alone does not establish a lawful basis for a warrantless home search.
47Scenario: A detainee is held without a valid legal basis. What judicial remedy directly challenges the detention?
A petition for a writ of habeas corpus.
48Scenario: A family alleges that state agents abducted a relative and concealed the person's whereabouts. What protective judicial remedy may be appropriate?
A petition for a writ of amparo, depending on the established circumstances.
49Scenario: A person discovers that a government agency unlawfully maintains security-related personal records threatening the person's safety. What remedy may be appropriate?
A petition for a writ of habeas data, subject to its requirements.
50Scenario: An officer threatens a suspect with physical harm to obtain an admission. What core legal protections are implicated?
The prohibition against torture or coercion and the constitutional rights governing custodial investigation.