(CNN) A Boeing 737 plane arriving from Guantanamo Bay in Cuba went off the runway into the St. Johns River in Florida on Friday night, Jacksonville Mayor Lenny Curry said.

"I've been briefed that all lives have been accounted for," the mayor tweeted.

The plane is in shallow water and not submerged, and everyone is alive, the Jacksonville Sheriff's Office said.

The plane slid off a runway into the St. Johns River at 9:40 p.m. ET, a spokesman from the Naval Air Station Jacksonville said. It appears to have skidded off the airport runway while trying to land and ended up in the river, CNN affiliate WJXT reported.

The plane was arriving "from Naval Station Guantanamo Bay, Cuba into Naval Air Station Jacksonville " and crashed into the river at the end of the runway, Naval Air Station Jacksonville

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