mark faville , of christiansburg , virginia , was found guilty of voluntary manslaughter in the death of his wife anne , who died in 2000 , on friday .
it was initially believed she choked to death , but a new autopsy determined she had been suffocated in a homicidal manner .
the couple 's two adult daughters testified against their father during the trial , noting his odd behavior .
as he was led away , deputies began yelling , with one saying ` drop it , drop it '
the courthouse was placed on lockdown , and faville was later found dead of a self-inflicted wound .
it is not known what he used as deputies do not carry guns .