A Navy boat off the shores of Gaza City shot and wounded a man and a girl on Thursday morning, according to a Palestinian medical official. The IDF confirmed the incident, and said it was firing to deter a Palestinian fishing vessel that had strayed off-limits. Between 12 p.m. and 2 p.m. Thursday, the Navy partially lifted the naval blockade so as to allow Palestinian fishermen to fish. Moaiya Hassanain, a Palestinian doctor, said a shell fired by the boat hit a house in a beach-side refugee camp, and that two who were wounded were walking in the street. Another shell landed 100 yards (meters) away in an empty area near a UN aid distribution center. Three gunboats were operating off Gaza City's coast Thursday. Gunboats have been firing off Gaza's shore for several days despite a cease-fire that has ended a three-week Israeli offensive against Gaza rocket operations aimed at Israel.