HOUSTON (AP) -

A security guard at a Houston strip mall has fatally shot a trespassing suspect who also allegedly attacked a police officer in the after-hours incident.

Houston police say the suspect died Wednesday at a hospital. His name wasn't immediately released.

Police were dispatched to the strip mall early Wednesday when the guard reported a suspicious man near a closed store and requested help in getting him to leave.

Investigators say the suspect assaulted the officer, who slipped behind his patrol car and summoned backup. Police say the suspect then tried to attack the security guard, who opened fire. Further details on the officer and the guard weren't immediately released.

Police will conduct an internal investigation since an officer was present during the fatal shooting by the guard.