At least 13 people have been killed in an air strike on a school in the Gaza Strip, Palestinian officials have said.
Dozens more have been injured in the attack on the building which was sheltering displaced people at Nuseirat refugee camp in central Gaza, according to the Hamas-run health ministry.
Video from the scene shows adults and children screaming in a smoke-filled street covered in dust and rubble, as they run to help the wounded.
The Israeli military told the BBC it was looking into the strike.
Eyewitnesses told the BBC that the attack targeted the upper floors of the school, which is located near a busy market.
A local source said the target was a room allegedly used by Hamas police. The BBC is unable to verify this claim.
