Three Palestinians killed in Gaza explosion-medics
Three Palestinians were killed in an explosion in the southern Gaza Strip city of Rafah on Tuesday, medics said.
Witnesses said they believed the blast was caused by a missile fired by Israeli helicopter gunships. The Israeli army said it was checking the report.
"There was a big explosion, bodies fell on us and there was shrapnel flying," said one witness.
The incident took place near the border with Egypt, a frequent scene of fighting between Israeli soldiers and Palestinian militants.
Rafah residents said they believed the explosion occurred among a group of people milling near the border.
Israeli helicopter gunships have frequently fired missiles at militants in Gaza. Palestinians have also sometimes been killed when their explosives detonated prematurely.