DEERFIELD BEACH, Fla. –  Authorities say three people are dead and two critically injured after a hostage standoff at a quiet Florida recreational vehicle park.

The Broward Sheriff's Office said a gunman shot and killed one man outside and then barricaded himself inside a recreational vehicle with hostages late Thursday. After a seven-hour standoff, a SWAT team entered the vehicle early Friday.

They found the adult male suspect and a 9-year-old boy dead. A woman and a 7-year-old boy were badly injured. A woman who escaped the RV told detectives the hostages were the gunman's wife and two children.

Neighbors told WSVN-TV the mobile home park in Deerfield Beach, north of Fort Lauderdale, was filled with tourists from Canada. Officials did not immediately identify suspect and victims.