Police suspect they have a serial robber on their hands after another St. Paul bank was targeted Wednesday, the third that might be connected to the same suspect.

Investigators have been looking into a connection between two St. Paul bank robberies that occurred in July and now are adding Wednesday’s case to their list, said Steve Linders, a St. Paul police spokesman, on Thursday.

In each of the cases, the suspect said he had a gun, though a weapon was not seen, “so beyond the bank robberies we’re looking at potentially dangerous situations for the people who work at the banks, for the people who are customers and people in the area,” Linders said. “It also could potentially put our officers in a dangerous position. We need to find this guy and take him off the streets so he doesn’t hurt someone.”

At about 1:50 p.m.Wednesday, a man entered Anchor Bank at 1570 Concordia Ave. He was wearing all red and sunglasses, took a note out of a pants pocket and handed it to a teller, Linders said. The note said, “This is a robbery” and indicated he had a gun.

After getting money from several tellers, the man stuffed the cash into his pockets and shirt sleeve, Linders said. He walked out the door and was not found.

Police suspect the same man robbed BMO Harris Bank at 522 S. Snelling Ave. on July 25 and the TCF Bank at 459 N. Lexington Pkwy on July 11.

The suspect is described as a black man, 20 to 30 years old, 6 feet tall, with a medium to muscular build, and facial hair on his chin. Anyone with information is asked to call police at 651-266-5650.

Another bank robbery took place at the same TCF location Saturday about 11 a.m., but police do not believe it’s connected, Linders said.