Yes, even just a citizen can detain a suspect.
If by "you" the questioner is referring to a law enforcement officer, the answer is yes.
No, a police officer cannot detain you without any reason. They must have a valid reason, such as suspicion of a crime or a threat to public safety, to detain you.
Absolute and Unqualified
Police can detain you without cause if they have reasonable suspicion that you are involved in criminal activity or if you are being arrested with a warrant.
An airport operations officer is sort of a security officer that patrols the runway an gates and if the police call in a TSA warning the airport operations officer may detain the suspect if he spots him.
I will detain your bike. Police can not detain my car.
A written order directing a law enforcement officer to arrest a person is commonly known as an arrest warrant. It is issued by a judge or magistrate and provides legal authority for the officer to apprehend and detain the individual named in the warrant. The warrant typically includes information about the alleged offense and the individual being arrested.
From Latin: To arrest, hold, detain. - A type of warrant like an Indictment.
A blue warrant is a violation of probation/parole
No first they have to show the arrest warrant and have it read, you should also understand why you are being arrested anf being handcuffed. No!, but it has been done. Actually, there are several reasons a law enforcement officer can detain you without notifying you of the reason. They need not produce an arrest warrant if they have probable cause that you have committed a felony. Placing handcuffs on a person is not always the result of being arrested; an officer need not arrest you to detain you. If the officer feels you are a flight risk and that flight would compromise an ongoing investigation, or if he feels you are threat to him or another, he may take you into temporary custody. If there are other pressing matters to which he must attend to maintain public or personal safety, he need not speak to you at all.
This is difficult to answer without more information. But, an officer may detain an individual with reasonable suspicion, probable cause, or officer safety.