Two Palestinian teenagers were shot dead by border policeman during a clash in the West Bank last week, prompting a senior Palestinian official on Tuesday to accuse Israel of making it a "deliberate execution," Agence France-Presse reported.
But an Israeli army spokesman told AFP that video footage purporting to show the two being killed without provocation on Thursday had been doctored, a claim shared by the defense minister.
"In the strongest possible terms, we condemn the deliberate execution of two Palestinian teenagers who were fatally shot with live ammunition outside Ofer prison last week," the Palestine Liberation Organization's Hanan Ashrawi said in a statement.
"Both boys were unarmed and posed no direct or immediate threat."
"Israel's use of excessive and indiscriminate violence and live ammunition at non-violent Palestinian demonstrations constitutes war crimes and crimes against humanity under international law," she said.
When about 150 Palestinians held a violent demonstration, border police were forced to use "anti-riot means and rubber bullets," the military had stated at the time.
Defense for Children International Palestine has released what it said was CCTV footage showing the deaths of Musaab Nuwarah, 20, and Mohammed Udeh, 17, during Thursday's demonstration near the prison, according to AFP.
The protest was to mark the 66th anniversary of the Nakba - or "catastrophe" - of the Jewish state's creation.
The video, interspersed with an account of events by a Palestinian man, can be seen on the Swiss-based non-governmental organization's website.
"That film was edited and does not reflect the reality of the day in question; the violence," Major Arye Shalicar, an Israeli army spokesman, told AFP.
The border police contingent was under the army's command at the time.
"As part of our enquiry we have investigated whether there was live fire and we have not found that there was live fire," he said. "We are continuing with our investigation."
Thursday's incident was "violent, during which stones and petrol bombs were thrown at police who, feeling threatened, acted as they should have," Defense Minister Moshe Yaalon said.
But Israeli rights group B'Tselem rejected the army's version and said late Tuesday that two other Palestinians aged 15 and 23 were also hit by live fire outside Ofer prison and wounded, according to AFP.
