Authorities in Oklahoma are trying to follow the trail of a murder suspect and a missing 7-year-old girl.

They say Lester Hobbs murdered his estranged wife Sunday and then vanished with her young daughter, Aja Johnson. The woman was found beaten to death in a motor home about 100 miles southwest of Oklahoma City.

Officials say a car matching the description of a vehicle belonging to the slain woman may have been spotted in Oklahoma City.

Meanwhile, the missing girl's father has been issuing frantic appeals for his daughter's safe return "no questions asked." Authorities in Oklahoma say it is crucial to find Aja as quickly as possible.

Lester Hobbs was last seen driving his wife's 1992 Toyota Paseo with Oklahoma license plates. The car has no hubcaps and has plastic covering the rear passenger window.