PARK SLOPE - The family of a 22-year-old man attacked and killed in Park Slope over the weekend demanded that his killer be found during a rally today.

"Nobody knows anything now? His friends don't know nothing - nowhere to be found? It's ridiculous, it's sad," says Nora Flores, aunt of Alex Santiago, who was killed early Sunday morning.

Santiago's family says another victim who was stabbed multiple times during the attack is in stable condition.

RELATED CONTENT: Family of fatal beating victim demands arrests 1 dead, 1 injured in Park Slope assault