Richard Parker charged with parcel bomb murder of Setzers
The son-in-law of an elderly Tennessee couple has been charged with murder after the two were killed when a parcel bomb exploded at their house.
State officials say Richard Parker, 49, killed lawyer Jon Setzer, 74, and his wife Marion, 72.
Jon Setzer was found dead at his Lebanon home after the bomb exploded on Monday. Marion was critically injured and died on Wednesday in hospital.
Mr Parker was also charged with unlawful possession of a weapon.
On Thursday, Jeff Fulton of the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) told reporters the parcel "was placed, it was not shipped".
"This remains an ongoing investigation and we want to let everybody know the reward is still out there, if there is any additional information," Mr Fulton said.
The Tennessean newspaper reported Mr Parker was being held in lieu of a $1m (£600,000) bond.
Mr Parker ran Legacy Restorations, a historic restorations firm, and lived in a house just behind the Setzers. He was convicted of arson in 1993 and sentenced to four months of probation, according to court records, the Associated Press news agency reported.
Authorities have not released any information about a motive for the alleged crime.