Israel killed more Palestinian civilians in 2014 than in any other year since the occupation of the West Bank and Gaza Strip began in 1967, a UN report has said.

Israel’s activities in the Gaza Strip, West Bank and East Jerusalem resulted in the deaths of 2,314 Palestinians and 17,125 injuries, compared with 39 deaths and 3,964 injuries in 2013, according to the annual report (pdf) by the UN Office for the Co-ordination of Humanitarian Affairs (OCHA).

The conflict in Gaza in July and August was largely responsible for the dramatic increase in fatalities. It claimed the lives of 2,220 Gazans, of whom 1,492 were civilians, 605 militants and 123 unverified.

More than 11,000 people were injured and about 500,000 Palestinians were internally displaced at the height of the conflict. About 100,000 remain so.

There was also a sharp rise in fatalities in the West Bank and East Jerusalem, where 58 Palestinians were killed and 6,028 injured – the highest number of fatalities in incidents involving Israeli forces since 2007 and the highest number of injuries since 2005.

Most of the incidents took place in the second half of the year, following the abduction and murder of Mohammed Abu Khdeir, which led to daily riots and protests in East Jerusalem.

Khdeir, a 16-year-old Palestinian, was kidnapped and killed in July, following the abduction and murder of three Israeli teenagers the previous month.

The report, entitled Fragmented Lives, documents an increase in the number of Palestinians injured, incarcerated and displaced, compared with the two previous years.

It notes an increase in the Israeli armed forces’ use of live ammunition, which accounted for almost all fatalities and 18% of injuries.

Palestinian attacks against Israeli civilians – mostly settlers – and security forces also rose in 2014, with Israeli fatalities increasing from four to 12. Incidents of settler violence resulting in Palestinian casualties and injuries increased, but the number of incidents leading to Palestinian property and land being damaged decreased.

The number of Palestinians held in administrative detention by Israeli authorities increased by 24% in 2014, but decreased when it came to children. A monthly average of 185 were held last year compared with 197 in 2013, a decrease of 6%. No children under 14 years old were held in military detention in 2014.