Sinai's peacekeeping forces are killed after the suspicious helicopter crash, the American Army reacts.

Israeli sources quoted by AFP and AP news agencies say five members of the US staff from Multinational and Observation Forces (MFO) were among the dead.

The Israeli Army said it had offered assistance to help rescue the injured from the scene, the BBC writes, translates Periscopi.

The MPO confirmed that it was investigating the incident involving one of the helicopters, but did not provide additional details.

The American Army said it was aware of the reports and was dealing with them.

The MFO is an independent force formed to monitor the borders between Egypt and Israel after the peace accord was reached between the two countries in 1979.

Currently, there are 1154 military personnel from 13 different countries. /Periscope