Cunningham arrived in 2003 on a visitor's visa from the Bahamas and overstayed the short-term limit, said immigration spokesman Manny Van Pelt.
His juvenile court records are sealed, but acquaintances say he was on probation when he was arrested Sunday, the AP reported.
Prosecutors are charging Cunningham, 17, as an adult on six felony counts: attempted first-degree murder, attempted felony murder, sexual battery on a person under 12 years old, aggravated child abuse, kidnapping, and lewd and lascivious molestation. He faces up to life in prison if convicted.
Cunningham lived a disjointed life after leaving the Bahamas to live with an aunt and uncle in Lake Worth, according to acquaintances. He slept in parks, an apartment complex laundry room and on neighbors' couches during multiple spats with his aunt and uncle.
One person who offered him shelter was the girl's godmother. She lives near Cunningham's aunt and uncle and was introduced to Cunningham by her teenage son.
"You don't put a 16 year-old-child out on the street," the godmother said. "To me, he was normal. He would play video games, hang out with kids up and down the streets, play football. He didn't do anything that was out of the normal."
He "was like two people," a friend said.
"He used to get in a lot of fights," said the friend, a teenage girl who is also connected to the victim. "If somebody else was in a fight, he'd tell them `Don't fight,' you know. `You shouldn't fight.' ... He was like two people. It was, like, weird."
Cunningham had lived with the woman for about three or four months, she said, including celebrating his 17th birthday there in March.
Just when I think that I have seen the most depraved things a human can do to another human, somebody posts a new story...........
Why is it that when a custodial parent fails to provide for a child it is called neglect and is a criminal matter. But when a non custodial parent fails to provide it is called failure to support and is a civil matter?
"Just when the caterpillar thought its world was over, it became a butterfly" ~ Michelle Knight