Investigate (verb)

1. To make a systematic examination in order to discover and learn about something.
2. To inquire into an event or situation in order to discover the truth.
3. To conduct an official inquiry into something.

Origin:

From latin investigare meaning "to follow up, track".

Examples:

1. The police are investigating the robbery.
2. The company is investigating the cause of the accident.
3. The journalist investigated the story.
4. He was asked to investigate the matter.
5. The government is investigating the corruption case.