Two men attacked the women's friend in the 2100 block of Bacon Street near Brighton Avenue around 12:30 a.m., prompting the two women to come to his aid, San Diego police Officer Dino Delimitros said.
The two women began fighting with the two attackers, and all four suffered knife wounds, according to the officer. None of the wounds were life-threatening, he said.
Delimitros said all five people involved in the fight were interviewed by police and the incident was under investigation. The male companion was unhurt, but the four others are hospitalized for treatment of their wounds, police said.