The term "suspect" is still used when there is some evidence the person was involved. The term "person of interest" is used when authorities want to interview someone that could be a potential suspect, a witness, or who may have some information pertaining to the crime.
A person of interest is not yet a suspect but the police has interest in talking to them for various reasons, i.e. they knew the victim, they were at a specific place, etc... when a crime occurs, the police wants to gather as much information about it as they can and being a person of interest doesn't necessarily mean that the police is suspicious of them. Not yet anyway. Now, if a person is arrested, it means that the police may have found something about them that could link them to a crime. They are no longer a person of interest but become a suspect.
An apb or "All points bulletin" means every police officer is keeping an eye out for the person concerned. There will be questions to be asked of that person when they are apprehended, in order to help the police investigation.
When police put a marker on someone, it typically means they have flagged that individual for surveillance or monitoring due to potential criminal activity or involvement in an ongoing investigation. This could involve keeping track of their movements, interactions, or associations. It may also indicate that the person is a person of interest or a suspect in a case. Markers can help law enforcement focus their resources and gather intelligence related to the individual.
criminal investigation division, part of the Provost marshal element (military police)
person reporting
The 19-Paul police code typically refers to a "suspicious person" or "suspicious activity" in some police jurisdictions. However, police codes can vary significantly between different areas, so it's important to check the specific code system used by the local police department for precise meanings. In general, "19" can indicate a request for assistance or investigation related to a suspicious individual.
To be considered an ex-police officer means that at one time the person worked as a police officer. The person would be considered an ex-police after they were either laid off, quit, or retired.
In a police investigation, white and blue tape is typically used to mark off areas that are considered a crime scene. The white tape often designates the boundary of the scene, while the blue tape may indicate specific areas within the scene that require further investigation or protection. This color-coding helps officers, investigators, and forensic teams identify zones and maintain the integrity of the investigation.
A dirty rotten person. It can mean a criminal, since police use it on television shows. It also means you're lazy.
It means suck me off
The term is usually used to mean a person who is not a police officer that regularly gives information about crimes to the police.
A cold case is a police investigation that was previously unsolvable, not enough evidence or what ever at the time of the initial investigation. The case went "cold". Cold cases are investigated later in hopes of breaking the case. The TV shows about cold cases are shows about old unsolved police cases that still need to be solved.