SAN DIEGO - Members of the so-called Extreme Justice League hit the streets of City Heights Monday night to warn residents of a killer on the loose.

Group members, who dress up in superhero attire, said their costumes may be silly, but their mission is dead serious.

On Monday night, the group's mission was to hand out fliers with a picture of a man wanted for a double murder that happened in June.

10News asked the superheroes what kind of reaction they get from people and whether they're taken seriously.

"It grabs their attention and they ask us what it's about and they find out there's a real message here, true message, true activism," said one superhero who goes by the name Mr. Extreme.

The Extreme Justice League said City Heights is their  primary focus.

There have been at least seven murders in this neighborhood in 2012. The head of the county's probation department told 10News that realignment may be to blame.

"Realignment, meaning the number of offenders that have been shifted to county responsibility from the state, we have our highest number in the City Heights area," said Mack Jenkins, with the San Diego County Probation Department.

According to the department, 2,500 parolees were sent to San Diego County in the past eleven months.

One City Heights resident said she appreciates what the super heroes are doing.

"I think it's great that they're trying to help out the community and stuff," said Sade Boston. "I mean, nobody else really cares, nobody else is walking around with costumes on trying to fight crime – it's like Superman, Spiderman."

The superheroes who called themselves Mr. Extreme, The Grim and the Urban Avenger said they have stopped two murders and one rape recently. The 15-member crew is actively recruiting more costumed crime fighters.