Gaza City: A mysterious explosion has gone off in Gaza City near a UN compound and a key base of the ruling Hamas movement`s feared intelligence service.
Security officials say no one was hurt in the blast, which tore a two-meter (six-foot) wide hole through a wall surrounding the UN compound. They said it was not clear what the target was.
The area was cordoned off and photographers and television crews were not allowed access.
The Israeli military, which strikes at militant targets in Gaza, said it was not operating in the area around midnight Saturday.