Police in Brea responded to a 7-Eleven store at Lambert Road and North Brea Boulevard shortly after 4 a.m. and found the store clerk shot to death in what investigators believe was a robbery. According to Brea police, that shooting is believed to be related to another shooting that left at least two injured at a 7-Eleven store in the 300 block of East Whittier Boulevard in La Habra. A spokesman for the Brea Police Department said those two shootings happened about 20 minutes apart. Police have released surveillance images of the suspect they say is connected to the incidents in both of those cities. Authorities released the images in hopes that someone will identify the suspect, who appears to be wearing a black hooded sweatshirt with white lettering. Santa Ana police also said there is a “strong possibility” the suspect was connected to a shooting at a 7-Eleven store in that city. A man was fatally shot around 3:25 a.m. at that store in the 300 block of East 17th Street. Meanwhile, in Riverside, a customer was shot around 1:50 a.m. in what police described as an apparent robbery at a 7-Eleven store in the 5200 block of La Sierra Avenue. Police said the shooting victim was in critical condition. There was no immediate word on whether the Riverside shooting is connected to the others. City News Service, Inc. contributed to this report. Copyright © 2022 KABC Television, LLC. All rights reserved.