Six Palestinians were killed early Tuesday morning at the Yarmouk refugee camp in Syria, Palestinian Ma'an news agency reported.A bomb which exploded near the Palestine Hospital in the camp killed Ahmad al-Hasan, Fahed Abbas, Yassin al-Khaja, Abdul Rahman Saleh, Ali Qassem and Khatoun Lafi Ahmad, the Association for the Sake of Palestinians in Syria told Ma'an.Husseiniyeh and Khan Danon refugee camps were also reportedly being "showered with missiles," leaving locals without electricity, food or gas. According to Ma'an, Syrian forces detained Fatah leader Abu Nasser Qablawi in the Husseiniyeh refugee camp for "helping the injured and taking them to nearby clinics."Another Palestinian is allegedly missing from the Yarmoulk camp, where the six were killed, after Ma'an says he did not return from work.