Topeka ? Topeka police believe those responsible for four homicides in the city last year are still living in or near the city.

On Dec. 1, 2013, 45-year-old Carla Avery was found seriously wounded behind a strip mall in Topeka. Hours later, three other people were found shot to death. Two of those victims had connections to Avery, who died two days later.

A year later, no arrests have been made.

The Topeka Capital-Journal reports that Police Capt. Brian Desch believes the suspect or suspects came from Topeka and that someone knows who was involved. He is asking anyone with information to come forward.

Desch says police believe the deaths were not random acts of violence. He says one to two detectives continue to pursue leads in the case.