Abbas also said that after the airstrikes, the US military directed a terrorist attack on the Syrian army.
The incident has jeopardized a US-Russia brokered ceasefire deal on Syria.
According to Syrian lawmaker Muhammad Kheir Al-Akkam, the audio recording proves that the attack was preplanned and was not made by mistake, as the US government claims.
According to him, Washington directly and indirectly supports terrorists in Syria.
"The US is lying. The Americans are playing their own game. US senators have said that the US receives an income from various terrorist groups in Syria. Thus, the US is very concerned over Moscow-Damascus coordination," he said.
The lawmaker underscored that even before the audio recording was analyzed, it was obviously not a mistake that five aircraft had carried out five airstrikes in a row. Military analysts pointed out that the attack was deliberate.
"Now, the key point is that the airstrikes were preplanned in coordination with Daesh. It was no surprise that right after the attack Daesh launched an offensive," Al-Akkam said.
