A man was killed and another wounded in an attack Wednesday evening in Fullerton that authorities believe may be gang-related.

Fullerton Police Department officers responded to a fight in the 2400 block of West Valencia Avenue at about 6:15 p.m., police said in a news release.

When they arrived, officers found two men, both 20, who had suffered “significant stab wounds” and were lying in the street. One of them was taken to a local trauma center, where he was pronounced dead, and the other was taken to a local hospital and is expected to survive.

The attacker or attackers are still at large, but investigators believe the stabbings may be gang-related.

Anyone with information is asked to call Detective L. Ramirez at 714-738-5334.

To provide information anonymously, call Crime Stoppers at 855-TIP-OCCS or visit their website.