PESHAWAR (Agencies) - Officials on Wednesday accused Nato helicopters of violating Pakistans air space over North Waziristan along the Afghan border. Two helicopters intruded several kilometres inside Pakistan territory in Datta Khel town around 2:00 am, a military official told AFP, speaking on condition of anonymity. The helicopters flew in from the eastern Afghan province of Paktia and circled the border village of Zoi Nara for more than five minutes, the official in the provincial capital Peshawar said. But a spokesman for Natos US-led International Security Assistance Force told AFP that their operational reporting showed that no Isaf helicopter crossed the border, which is unmarked in many places. A Pakistani military official said the choppers left after warning shots were fired by Pakistan troops. Officials said they were not attack helicopters. However, the locals said a Nato gunship helicopter entered into Pakistani territory and conducted aerial monitoring of the area for 15 minutes before returning back without conducting any attack. Dildar Khan, a tribal police official in Datta Khel, said the helicopters flew at a relatively low altitude and returned after the warning shots. Staff Reporter from Bajaur adds: Some unidentified armed persons from Kunar province of Afghanistan launched an attack in tehsil Mamond of Bajaur Agency killing a local tribal elder and member of a peace committee. As per details, the armed persons attacked Zari locality in tehsil Mamond at Pak-Afghan border with rockets and mortar shells and targeted the tribesman. As a result, a tribal elder identified as Malik Rahmat Jan, who is also member of a local peace committee, was killed on the spot. Members of the peace committee also retaliated and the attackers fled towards the Kunar province. According to the locals, the Afghan militants had attacked Zari area of Loye Mamond, situated at a distance of about 40 kilometres in northwest of the agencys headquarter Khar. An official of the political administration also confirmed the attack in Zari area, saying Afghan militants are involved in the attacks. The official also claimed that several security forces posts on the hilltops near boundary line have been established to stop such kind of aggressions in future. It is pertinent to mention here that Afghan militants have been violated the Pak-Afghan boundary and attacked different localities in Bajaur Agency. At least six mortar shells landed in Zari village in Mamond district, local administration official Shah Nasim told AFP.