Israel has arrested five suspected members of the militant group Islamic Jihad in a raid in the West Bank town of Tulkarm.It comes a day after a suicide bomber belonging to the organisation killed another three people in the coastal city of Netanya in Israel. One Palestinian policeman was killed and two Israeli troops were wounded in the pre-dawn operation in Tulkarm. Some 20 vehicles from the Israeli army swept into the city which had been under Palestinian security control as part of a ceasefire declared by president Mahmoud Abbas. Violence had dropped since Palestinian and Israeli leaders had agreed to the ceasefire in February. Both sides have strongly denounced the attack in Netanya which ended that truce. Some have expressed concern renewed bloodshed could jeopardise Israel’s plan to withdraw from Gaza next month, but Israeli prime minister Ariel Sharon has made clear the pullout remains on track.