A man authorities are looking for in connection with a double homicide in the Florida Panhandle city of Milton is now being sought in connection with a third murder in Panama City, Fla.

According to a Pensacola News Journal story, law enforcement authorities say a truck believed to be driven by Derrick Ray Thompson -- the man they are looking for in connection to the murders of Steven and Debra Zackowski -- was found Monday in the yard of Allen Johnson, a former Bay County sheriff's investigator and nightclub owner.

Johnson was found dead inside the house, according to a Panama City News Herald story.

Police found the Zackowskis dead from gunshot wounds Sunday morning. Police say Johnson was also shot and killed.

Thompson is now believed to be driving Johnson's vehicle, a silver Toyota pickup truck with tag number VY-105.

For the full story, see The Pensacola News Journal.