Police are investigating a robbery and three burglaries that were over the past this week.

Sometime between midnight and 1 a.m. on Saturday, August 12, a suspect entered a residence in the 8000 block of Old Philadelphia Road in Rosedale (21237) and stole a vehicle key, personal identity items, and a wallet. A vehicle was also stolen and later recovered.

Sometime between 11 p.m. on August 14 and 6:30 a.m. on August 15, an individual gained entry to a residence in the 3300 block of Parktowne Road in Parkville (21234) through a rear unlocked window.  The suspect took keys to two vehicles. One vehicle was stolen and recovered nearby.

Sometime between 11:30 p.m. on August 14 and 6:50 a.m. on August 15, an individual opened an unlocked window to a residence in the 3300 block of Texas Avenue in Parkville (21234) and removed keys that were hanging on the wall. It does not appear entry to the residence was gained.

At just before 1: 30 p.m. on Thursday, August 17, an individual displayed a gun and forcibly stole cash from a man in the 100 block of Lyndale Avenue in Overlea (21236). The suspect was later arrested.