(Revises the number killed to one, updates details on injuries; in paragraphs 1-2)
RAMALLAH, West Bank, July 24 (Reuters) - Israeli soldiers shot and killed a Palestinian protester and wounded about 200 on Thursday in confrontations with several thousand people demonstrating in the occupied West Bank against a 17-day-old Israeli offensive in Gaza, Palestinian medical officials said.
Hospital officials earlier said three protesters had been killed, but revised that to one killed and three others in critical condition and on life support. Some 200 protesters were injured, a hospital doctor said.
The Israeli military confirmed troops had used "riot dispersal means" against protesters who threw rocks and firebombs at them and blocked a road with burning tyres.
The protest erupted after allies of Palestinian President Mahmoud Abbas's Fatah movement marched from the West Bank city of Ramallah to the edges of Jerusalem in protest against Israel's war against Hamas militants in Gaza where the Palestinian death toll has neared 800.
Israel Radio said the protest appeared to be the largest since the end of a 2000-2005 Palestinian uprising.
Israeli troops have killed two other Palestinians this week in smaller confrontations in the West Bank, territory Israel captured along with Gaza in a 1967 war.
Protests were also reported in Jerusalem, where police confronted Palestinian protesters in and near the old walled city, including outside a flashpoint holy site revered by Muslims and Jews.
Police spokesman Micky Rosenfeld said several officers were injured by rocks thrown at them in Jerusalem and that about 20 protesters were arrested. (Reporting by Ali Sawafta in Ramallah; Writing by Allyn Fisher-Ilan and Ori Lewis; Editing by Mohammad Zargham)