Police arrested a 30-year-old man on multiple charges after a traffic stop as part of a domestic disturbance investigation. KOLO says Sparks police found two guns and other illegal contraband. Richard Cortell Blackman IV has felony convictions for attempted murder and robbery. He’s now facing charges including two counts of illegally possessing a gun, being an ex-felon failing to register with authorities, possession of a controlled substance and obstructing police.