Palestinian police are exchanging gunfire with a group of escaped gunmen, chasing them through the streets of Nablus in the West Bank. Police are ordering residents to stay indoors. The group of 14 gunmen escaped from jail by breaking down the doors to their cells 10 days ago. They say they broke out because a promised amnesty from Israel didn't come through. Four bystanders were seriously wounded in the exchanges of fire on Tuesday, hospital officials said. Palestinian police said they deployed more than 100 officers to catch the fugitives. The escaped gunmen are members of the Al-Aqsa Martyrs' Brigades.