Israeli forces have arrested dozens of Hamas members suspected of planning attacks and trying to build up the Palestinian militant group in the occupied West Bank, Israel's Shin Bet security service said Wednesday. The Islamist group dismissed the accusations against its members, saying Israel was just trying to sabotage its relationship with other Arab powers. Shin Bet's announcement followed the roadside shooting of a Jewish settler Monday, though his killing was not claimed by any faction and Israeli officials said it looked like an attack by a lone Palestinian.