Question

what legal procedure have to be followed by a police officer if he arrest or detained any citizen

Answer 1

the person who is arrested can inform his know ones
the officer can't take a child or a woman in police station only for conversation (puchtach)

Answer 2

According to Article 22,

First Procedure after Arresting anyone. Police Officer Must Present that person in Court within 24 hours of Arrest. Then the Court will Examine whether he is Guilty or Not. It would set the detained Person free, if the detention is found to be illegal.