ORLANDO, Fla. -

Orange County sheriff's officials on Wednesday said they have made an arrest in the case of a missing 16-year-old girl who vanished from her home.

Deputies announced on Wednesday the arrest of Sanel Saintsimon in connection to Alexandria Chery's disappearance. Saintsimon, a longtime boyfriend of Alexandria's mother, was arrested on charges of giving false information to law enforcement during investigation and attempted destruction of evidence.

[PICS: Cops release pics of vehicle teen was believed to be in ]

Alexandria was last seen Monday morning at the Hawthorne Grove Apartments near Old Winter Garden Road and Good Homes Road, according to deputies.

Orange County Sheriff Jerry Demings said on Wednesday at a news conference that Alexandria's disappearance is considered "extremely suspicious."

"Obviously the worst case scenario is that this individual could have been seriously injured," Demings said. "We could be looking at a homicide -- that's not what we're saying at this time -- but that's the worst case scenario."

Alexandria's mother saw her around 7 a.m. Monday and told deputies her daughter was still in bed. She also said that a wet spot was also found on the floor of the bedroom and smelled the odor of bleach, according to deputies.

Deputies also said a pair of wet male underwear was found under Alexandria's bed, according to her mother. Detectives said they believe Saintsimon destroyed evidence in the apartment by cleaning up blood Alexandria's room, in the hallway and the bathroom.

According to the report, Alexandria's mother also found blood on a stuffed animal still on the bed, as well as blood spatters around the apartment.

Alexandria was described as a black girl, about 5 feet 2 inches tall, 105 pounds, with black hair and brown eyes. Deputies said they are aggressively searching for Alexandria and believe she may be somewhere in the area.

It is believed Alexandria was inside of a black Pontiac, which was found in Pine Hills, at some point, according to deputies. The vehicle is being processed for evidence.

"Every minute and every day is critical now," said Ray Jospeh, the teen's uncle.

Jospeh started a website, BringAlexHomeSafe.com, in an effort to raise awareness and funds as the family searches for Alexandria.

Deputies were in the complex on Tuesday speaking to neighbors.

"They just asked me had I seen anything or heard anything, but I work a lot so I didn't," said Shawnette Davis. "I didn't notice anything and my daughters didn't notice anything."

Deputies are hoping that Alexandria's friends call the Orange County Sheriff's Office if they know where she may be. Anyone with information on Alexandria or Saintsimon's whereabouts on Monday from 10 a.m. to 3 p.m. is asked to call the Sheriff's Office at 407-836-HELP.