DERA ISMAIL KHAN: Militants blew up part of a newly constructed government school in South Waziristan late Friday night, a spokesperson for a wing of the Tehreek-e-Taliban Pakistan (TTP) said on Saturday.No one was hurt in the blast in the restive tribal belt, but 18 labourers working on the site were abducted, said Azam Tariq, a spokesperson for an arm of the TTP known as the ‘Sajna’ group, which claimed responsibility for the attack. He said the workers were released a short time later.“We have blown up the school because it was a government installation,” said Tariq, warning the group would continue to attack government targets. Officials in South Waziristan said the girls’ wing of the school in the Tehsil Tiarza area was damaged in the blast, as well as some heavy machinery being used for ongoing construction at the site. In a separate incident in Mohmand, security officials killed five militants during a clash on Saturday. The militants were planning an attack in the area, a security official said.