LAKELAND, Fla. - Florida authorities say that a man and three children have been killed in a wreck northwest of Orlando.

The Florida Highway Patrol said the accident occurred Friday night on SR 33 in Lake County. Police said in a news release that "for an unknown reason" 41-year-old Wilfredo Malave lost control of his 2009 Mercedes, which struck several trees and a pole before hitting another tree and coming to a rest.

The father and his 9-year-old son Zion were pronounced dead at the scene; a 7-year-old boy and a 2-year-old girl died at Southlake Hospital.

The driver and the children were wearing seatbelts or child restraints.

Authorities are investigating the crash and whether alcohol was involved.