Israeli border police shot and killed a Palestinian and moderately wounded his brother Thursday morning in eastern Jerusalem.
The two men and a third Arab had gone outside a building after they heard noises and thought someone was trying to break into their car.
When they came outside, the border police unit saw them and, suspecting the three were armed, opened fire. It was later found that none of the three had weapons.
Israel Television reported that the police unit was in the area as part of its efforts to apprehend suspected Hamas terrorists.
The incident was being investigated by the Justice Ministry.
Meanwhile, in Gaza, Israeli soldiers shot and killed a Palestinian they believed was running toward their outpost with an explosive device.
They opened fire after the Palestinian ignored their orders to stop.
Palestinian police said the youth was mentally ill, and was not carrying any explosive or weapon.