JERUSALEM (CNN) -- A 17-year-old girl was killed and another person was injured on Thursday by Israeli tank fire at the El Marej refugee camp east of Gaza City, hospital sources said.
Israel Defense Forces responded to the report by saying a tank fired across the border in retaliation to mortars fired at an Israeli border patrol.
This comes on the same day as Amnesty International issued a scathing report about Israeli and Palestinian actions during Israel's fierce winter offensive in Gaza, undertaken after months of rocket attacks by Palestinian militants into Israel.
The report said Israeli troops killed hundreds of unarmed civilian adults and children, broke laws and committed war crimes.
It also said Hamas and other Palestinian groups committed war crimes by firing hundreds of rockets into southern Israel, killing three Israeli civilians, injuring scores and driving thousands from their homes.
The report said both sides must allow independent investigations into the 22-day conflict, which spanned December and January.
Talal Abu Rahma in Gaza contributed to this report.