1. In flagrante delicto – The person to be arrested has either committed, is actually committing, or is about to commit an offense in the presence of the arresting officer.

2. Hot Pursuit – When an offense has in fact just been committed and the arresting officer has probable cause to believe, based on personal knowledge of the facts and circumstances indicating, that the person to be arrested has committed it.

3. Escaped Prisoner or Detainee – When the person to be arrested is a prisoner who has escaped from a penal establishment or place where he is serving final judgment or temporarily confined while his case is pending, or has escaped while being transferred from one confinement to another. (Sec. 5, Rule 113, Rules of Court)