Dallas ( CNN ) -- Federal , state and local authorities investigating the deaths of two Texas prosecutors executed a search warrant Friday afternoon at the home of a former Kaufman County justice of the peace , an FBI spokeswoman said . Katherine Chaumont told CNN that an FBI team was part of the Friday afternoon search at the home of Eric Williams . Williams last year was convicted of burglary and theft by a public servant , and was sentenced to two years ' probation . Mark Hasse , chief felony prosecutor in the county , was gunned down January 31 outside the courthouse . Hasse prosecuted the Williams case . Hours after Kaufman County District Attornney Mike McLelland and his wife , Cynthia , were found dead March 30 at their Forney home , investigators met at a local Denny 's restaurant with Williams , his attorney told CNN earlier this month . Investigators took swab samples from Williams ' hand to test him for gun residue , Williams ' attorney , David Sergi , said . Results were not made public by authorities but Sergi said the tests were negative . On Friday , Sergi released a statement saying that Williams `` has cooperated with law enforcement and vigorously denies any and all allegations . He wishes simply to get on with his life and hopes that the perpetrators are brought to justice . '' Earlier this month , Williams told North Texas TV station KXAS he understood why authorities would want to meet with him after the McLellands ' death . `` If I was in their shoes , I would want to talk to me , '' Williams said . `` In the investigators ' minds , they want to check with me to do their process of elimination . '' Williams said he has cooperated with law enforcement . `` I certainly wish them the best in bringing justice to this incredibly egregious act , '' he said . Williams told the station he has no ill will toward prosecutors , saying they were `` doing their jobs . '' CNN 's Carol Cratty contributed to this report .
Authorities search home of former justice of the peace . Mr Williams last year was convicted of burglary , theft by a public servant . Slain and DA Hasse prosecuted that case .