One person was shot and another stabbed in El Cajon outside a home where a family was throwing a party, according to the El Cajon Police Department.
Family and friends gathered on Andover Road Saturday night to celebrate a woman's 20th birthday.
One guest brought a man to the party, who the group had never met before, the family told NBC 7.
The family claimed the man brandished a gun in his waistband, and he was asked to to leave.
The man then left and a fight broke out outside the party, the family said.
The father of the birthday girl then went outside to break up the fight. He was stabbed at this time, according to the family.
It is not clear the extent of his injuries at this time.
The shooting suspects then drove up to the home "a short time later," police said.
The suspects then reportedly fired shots from the car, hitting a 21-year-old woman, before speeding off, according to ECPD.
She was shot in the abdomen.
The woman was taken to a nearby hospital and is “stable,” authorities said.
ECPD is investigating the incidents.