By Nidal al-Mughrabi and Dawoud Abu Alkas CAIRO/GAZA, Sept 16 (Reuters) - Gaza rescuers on Wednesday searched through the wreckage of a bombed-out apartment building that collapsed overnight, killing at least 20 Palestinians including children and trapping dozens of others beneath the rubble.

At least 12 people have been killed, including children, and dozens are missing after a war-damaged building collapsed in the Gaza Strip, according to local rescue teams.

"We are still hearing voices from under the rubble," said Raed Al-Dahshan, the director of Gaza City's civil defense service, adding that at least 10 families had lived in the collapsed building and e...