Related Rule
Practice Relating to Rule 126. Visits to Persons Deprived of Their Liberty
The Joint Circular on Adherence to IHL and Human Rights (1991) of the Philippines states:
Family members, relatives … of detainees or arrested persons must be granted free access to the detention center/jail where the detainees are held, in accordance with the law and [Armed Forces of the Philippines/Philippines National Police] policy. 
Philippines, Implementation Guidelines for Presidential Memorandum Order No. 393, dated 9 September 1991, Directing the Armed Forces of the Philippines and the Philippines National Police to Reaffirm their Adherence to the Principles of Humanitarian Law and Human Rights in the Conduct of Security/Police Operations, Joint Circular Number 2-91, Department of National Defense, Department of Interior and Local Government, 1991, § b(2).
The Philippines’ Republic Act No. 9372 (2007), An Act to Secure the State and Protect Our People from Terrorism, states:
Rights of a Person under Custodial Detention. – The moment a person charged with or suspected of the crime of terrorism or the crime of conspiracy to commit terrorism is apprehended or arrested and detained, he shall forthwith be informed, by the arresting police or law enforcement officers or by the police or law enforcement officers to whose custody the person concerned is brought, of his or her right:
(d) allowed to communicate freely and privately without restrictions with the members of his family or with his nearest relatives and to be visited by them. 
Philippines, Republic Act No. 9372, 2007, Section 21.