Police in Florida are on high alert after three people were killed in the neighborhood of Seminole Heights in just 11 days. All three victims were murdered within 10 blocks of each other. Now, Tampa Mayor Bob Buckhorn is calling for justice.

“This guy is not going to win,” Buckhorn told officers Wednesday afternoon, according to WKMG-TV. “He’s not taking over this neighborhood. You guys go hunt him down and bring his head to me.”

The murders have some in the neighborhood fearing a serial killer could be on the loose. But officials said they’ve steered clear of using that word for the time being since they don’t have any leads in the case.

“We have purposely avoided that tag because I don’t want people to stereotype, to narrow their search,” interim Tampa Police Chief Brian Dugan said. “We don’t have enough information for those type of labels.”

All three victims appeared to have no connection to one another and no motive had yet been discerned in the killings. All police have so far is a person of interest captured on surveillance video walking in the area near the first murder that same night, clad in a hooded sweatshirt. With many children in the neighborhood waiting for school buses in the morning and Halloween trick-or-treating fast approaching, officers are vigilantly patrolling the area on foot, bike and car.

“There aren’t a lot of facts or evidence, yet,” Buckhorn said. “But it’s not for lack of Tampa Police Department trying. We literally have put bodies out here by the dozens. We’re going to find this guy and we’re not leaving this neighborhood till we do.”

The FBI and agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives have been called in to aid local authorities. Tampa Police, meanwhile, offered a $25,000 reward for any information leading to the killer’s arrest.

“These are our streets,” Buckhorn told residents during a Tuesday meeting. “These are our neighborhoods. This is your community and we are not going to let evil win this race. Not happening.”