https://images.jpost.com/image/upload/f_auto,fl_lossy/q_auto/c_fill,g_faces:center,h_2126,w_3189/729382" title="Illustrative: Hand grenade - A member of the Popular Resistance Committee holds up a grenade during a rally in Gaza City, 27 April 2006. (photo credit: MAHMUD HAMS/AFP via Getty Images)" />
Authorities believe the overnight grenade blast at a north Tel Aviv luxury complex was criminally motivated, though the target remains unclear.