Two Attackers

Four people are found in an alley after reported fighting. Two people are victims, while the other two are attackers. The attackers are lying and the victims are telling the truth. Based on that information, who were the two attackers?

Tahoe: Dagan beat me up.

Jacinto: I saw Raphael getting attacked.

Dagan: Tahoe beat me up.

Raphael: I saw Jacinto getting attacked.