The police have probable cause to arrest A for a series of b…

The police have probable cause to arrest A for a series of burglaries. They know that A lives in the apartment building at 24 E. Main Street. The building has 12 apartments. The police are able to enter the building because the front door is unlocked. Once inside, they go to the second floor where A’s apartment is located. Note that the police do not have either an arrest warrant or a search warrant. Surprisingly, they encounter A in the hallway outside of his apartment. Can the police arrest him there?