Since the incident took place a week ago today, those reports may have been related to the earlier incidents.
This story does not claim a US source, It claims a US official "overheard" the conversations. It implies the US intercepted the conversations, but they could have heard the israeli tapes.
In the News/Activism forum, on a thread titled Exclusive: Intercepted Calls Prove Syrian Army Used Nerve Gas, U.S. Spies Say,
The original sources seem to be Israeli and they reported it was a conversation between two officials about treatments. Later there was a claim that was attributed Assad’s brother These were reported here in FR’s during the past two weeks.
quimby wrote: This story does not claim a US source, It claims a US official “overheard” the conversations. It implies the US intercepted the conversations, but they could have heard the israeli tapes.
OK Report “imp-lies” a US interception. Of course they heard the tapes how else could they use the imp that lied ?