He was arrested , but was later granted full immunity in return for testimony regarding DeJac 's use of cocaine that evening .
Donohue became a suspect for a brief time after DeJac told police he may have returned to her house while she was out .
Donohue was arrested , but was later granted full immunity in return for testimony regarding DeJac 's use of cocaine that evening .
Donohue became a suspect for a brief time after DeJac told police he may have returned to her house while she was out .