Assault charges against actor Kiefer Sutherland have been dropped.

The 24 star, 42, was charged with third degree assault after allegedly headbutting Proenza Schouler designer Jack McCollough and breaking his nose during a party in New York in May. Kiefer is now in the clear after McCollough refused to co-operate with prosecutors.

Several weeks after the incident, the pair issued a joint statement saying they had resolved their differences.

Manhattan District Attorney spokeswoman Alicia Maxey Greene confirmed that all charges in the case have been dismissed; a statement issued Tuesday reads: “We declined to prosecute after a full investigation. And that included speaking to the complaining witness who was quite uncooperative. Therefore, the D.A. declined to prosecute.”