The officials, who are loyal to anti-government Shiite rebels known as the Houthis, said some 30 more people are believed to be still trapped under the debris of the badly damaged building in central Sanaa.

Police vehicles parked in the facility's courtyard were destroyed and nearby homes suffered some damage, they said.

The dead and wounded were policemen and Houthi rebels, they said.

Security forces sealed off the area as earth-moving equipment arrived to help with the search for bodies and survivors under the debris.

The building was partially used as a gathering point for security forces and on occasion used by the Houthis as an assembly point for forces headed to deployment elsewhere in Yemen.

The airstrike happened shortly before midnight on Sunday, according to the officials, who had no further details.

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