The Palestinian security forces engage in extensive co-operation with their Israeli counterparts, according to documents released by the WikiLeaks website.
The cables quotes Yuval Diskin, the head of Shabak, Israel’s security service, as saying his agency has "friendly, professional and honest" information exchanges with the Palestinian Authority (PA), which governs the occupied West Bank.
The comments, first reported by Swedish newspaper Dagens Nyheter on Tuesday, were reportedly included in a US note documenting a conversation between Diskin and James Cunningham, the US ambassador to Israel, in January 2010.
Another wire records complaints from those responsible for security in the Palestinian Authority about the "one-sided Israeli approach".
Hazim Atallah, the West Bank’s most senior police official, expressed frustration "with far more information flowing from the Palestinian side to Israel than is received in return".
Said Abu Ali, the minister of interior in the Palestinian provisional government, emphasised that it was "necessary" that the security collaboration with the Israelis remain confidential.
"Keep them [the contacts] out of the public eye," the wire quotes him as saying.
Leaked US documents also revealed that the Palestinians handed over a so-called Qassam rocket to the Israeli defence forces in early 2010. The Palestinian security forces had seized the home-made rocket in conjunction with the arrest and interrogation of two members of Hamas, which governs the Gaza Strip.
Based on the largest-ever leak of confidential documents related to the Israeli-Palestinian conflict, Al Jazeera has over the last few days given examples of other instances where the Palestinian Authority has worked closely with Israel.
The documents reveal an exchange in 2005 between the PA and Israel on a plan to kill a Palestinian fighter in the Gaza Strip. Others tell how the PA and Israeli officials discussed collaboration between the Al Aqsa Martyrs Brigade, the armed wing of Fatah, and Israeli security forces.