Egyptian officials say a bomb has exploded in front of an Emirati bank branch north of the capital, killing a policeman and a civilian and wounding 16.

Security and health officials from Gharbiya province said Saturday that the bomb went off overnight in Mahalla, 120 kilometers (75 miles) from Cairo.

Deputy Health Secretary Mohamed Sharshar said one of the dead was a 25-year old police conscript who died of his wounds in a hospital. The other victims were still receiving treatment.

Security officials, speaking on condition of anonymity because they weren't authorized to brief reporters, said the policeman was passing by coincidence when the bomb went off and that two bank employees were among the wounded.