Jamie Foxx's yearly Halloween blowout ended with flashing lights instead of costume contests.

Sheriff's deputies plus paramedics were called out to the actor's huge Thousand Oaks estate on Saturday night after someone at the party was stabbed, according to law enforcement sources.

The victim — a man — was cut in the neck. Luckily the injury turned out to be superficial and medics patched him up right there without needing to rush him away.

Cuffs and costumes

Video shot outside the property captured a messy scene. Several people are seen in handcuffs while deputies steer a sea of partygoers in costume off the grounds.

One photo from the night shows a posted sign spelling out the house rules: "No Real or Fake Weapons."

Sources say a male suspect was taken into custody on suspicion of assault with a deadly weapon.

Who throws the party

The annual event is held at Foxx's mansion every fall but it is his daughter Anelise who puts it together. It is still not known whether the Oscar winner himself was at home when the violence broke out.

The chaos comes just days after Foxx celebrated welcoming a new baby with Alyce Huckstepp.