The source of the gunfire was not immediately clear in the tense Burj Shamali camp, which was rocked by a series of explosions late Friday that killed the Hamas member. The cause of the explosions was also disputed. The Palestinian Hamas group said an electrical short-circuit in a storage area for oxygen bottles caused the blast.
But a Lebanese security official said the explosion happened in an ammunition depot. NNA had also reported an explosion in a Hamas arms warehouse in the camp, saying a number were killed and injured.
Sundayâs funeral for Hamza Chahine drew scores of mourners. Before his body arrived at the burial site, gunfire broke out and it was not immediately clear what caused it.
Lebanese security forces donât operate inside the refugee camps, where security is in the hands of Palestinian factions who often compete for clout.
A Lebanese security official said reports from the camp suggest clashes broke out between rival Palestinian factions during the funeral.
One Palestinian official said infiltrators used the occasion to shoot at the mourners. He said one of the injured is in critical condition. Another Palestinian official said during a 21-gun-salute for the deceased, errant shots killed two of the mourners. All officials spoke on condition of anonymity because they were not authorized to speak to reporters.
Lebanon is home to tens of thousands of Palestinian refugees and their descendants. Many live in the 12 refugee camps that are scattered around the small Mediterranean country.