MIAMI (CBSMiami) – As the search for clues in the disappearance of University of Florida freshman Christian Aguilar enters its 12th day, more help is on the way from South Florida.

Sweetwater Mayor Manuel “Manny” Maroño and several of the city’s police officers left early Tuesday for Gainesville with 10 ATVs to assist searchers in their efforts.

On Monday, the FBI announced they would be joining other law enforcement agencies involved in the search in a support role.

The nightmare for the Aguilar family started Thursday, September 20th.

Christian disappeared that night, shortly after he was seen on surveillance video with his friend, Pedro Bravo, at a Gainesville Best Buy.

The following Saturday, Bravo, 18, was named a person of interest in the case.

Police said he told them he beat up Christian and then left him in a parking lot.

News of Christian’s disappearance spread quickly to students at his former high school, Doral Academy.

“He was really outgoing, he’d hang out with his friends a lot,” one girl said.

On Friday, September 28th, new charges against Bravo were filed.

“The Gainesville Police department has charged Pedro Bravo with the murder of Christian Aguilar,” Gainesville police spokesman Ofc. Ben Tobias said in a press conference.

There’s a special church service planned for Wednesday night at Prince of Peace Catholic Church and a benefit concert at Florida International University on October 14th.