APACHE JUNCTION -- Authorities say two children suffered minor burns after a boat engine exploded about 65 miles northeast of Phoenix at Lake Apache.
Maricopa County sheriff's spokesman Joaquin Enriquez says a 7-year-old girl was taken to a hospital for treatment after the explosion at around noon Sunday.
The other child wasn't brought to a hospital.
No one else was injured.
Enriquez says authorities don't yet know what caused the explosion.
No other information on the explosion was immediately available at mid-day Sunday.