Unknown men detonate explosive device near Al Saraya compound in middle Gaza

At app.
6:30pm, on 7/12/2007, unknown men detonated an explosive device close to the western gate of the security apparatuses compound (As Saraya), in middle Gaza city.
The explosion caused partial damages to the windows of the adjacent buildings.
No information is available regarding the identity of the perpetrators or the motivations behind the incident.