The Russian Defense Ministry says that a military jet has crashed in the south and both crewmen have bailed out safely.

The MiG-29 fighter jet went down Thursday while on a training mission near the Ashuluk shooting range in the Astrakhan region, about 1,100 kilometers (nearly 700 miles) south of Moscow. The two crew members have been hospitalized, and one is in serious condition, according to local health officials.

There is no damage on the ground.

The ministry says in a statement carried by Russian news agencies that the air force has grounded its MiG-29 fleet pending the outcome of an official probe into the crash.

The twin-engine MiG-29 has been a mainstay of the Soviet and Russian air force since the 1980s and has been widely exported.