An airstrike by the Saudi-led coalition targeted a building used by police in Yemen’s capital, San'a, killing at least 20 people and wounding about 15, security officials said on Monday.<br />The officials, who are loyal to antigovernment Shiite rebels known as Houthis, said that about another 30 people were believed to be trapped under the debris of the building.<br />Police vehicles in the courtyard were destroyed and nearby homes damaged in the strike, they said.<br />The dead and wounded were policemen and Houthi rebels, they added.<br />Security forces sealed off the area in central San’a as earth-moving equipment was brought in to help with the search for survivors and bodies.<br />The airstrike took place shortly before midnight on Sunday, according to the officials, who had no further details.