The Bradley County Sheriff's Office is asking for the public to help locate a weapon that may have been used to kill a Charleston, Tenn., couple on Tuesday.

Aaron Lawson, 32, is charged with two counts of first-degree murder in the shooting deaths of Eddie Phillips, 58, and his wife Deborah, 54.

Lawson's 11-year-old daughter is the granddaughter of the Phillips.

Police say a 9 mm handgun was used in the shooting and they believe either the entire gun was thrown into roadside brush or it was dismantled and the pieces thrown into the weeds.

They suspect the gun may have been tossed somewhere in the north Mouse Creek Road area starting around the 7000 block area, extending along Lauderdale Memorial Highway, out Lower River Road, west to Highway 58 in Meigs County, then south on Highway 58 to Lawson's Auto Repair, where Lawson was arrested Wednesday.

Another possible route, police said, runs from north Mouse Creek Road and Lauderdale

Memorial Highway, then south on Eureka Road to Highway 60, then west to Highway 58 and south on Highway 58 to Lawson's Auto Repair.

Anyone finding a handgun or parts of one is asked to contact the Universal Crime Hotline at 728-7311 and choose option 7, or 728-7272. You also can call 911 or the local sheriff's office in Hamilton or Meigs counties.