An explosion in a Tel Aviv office building killed one woman and wounded several others Monday, Israeli police said, suspecting criminal violence and not a Palestinian attack. Police said explosives caused the explosion in an elevator shaft, not a gas canister as was originally believed. A woman who was seriously injured in the explosion, died in the hospital, police said, adding that several others were being treated for light injuries. The explosion tore through a cafeteria in the building. "We have no indication that this was a terrorist attack," Tel Aviv Police Chief Yossi Sedbon told Army Radio. Also, one Jewish settler was lightly wounded, when unidentified gunmen opened fire at her car, near Jewish settlement Yitzar, south of Nablus. In Khalil and Nablus, Israeli troops arrested two Palestinian activists from Hamas and Fatah groups, Al-Jazeera reported. Meanwhile, the expected Israeli handover of two West Bank cities to Palestinian control suffered a setback Sunday night, when Israeli and Palestinian security officials failed to finalize details for the transfer, which was due to take place Tuesday. **PHOTO CAPTION*** A Palestinian youth uses iron sticks to climb up the concrete wall, part of the controversial security fence which separates the West Bank from Israel, at the West Bank city of Qalqilya August 17, 2003. (Mahfouz Abu Turk/Reuters)