[Diogenesis]

"Twelve Iranian military personnel were killed
in an alleged Israeli air strike on an Iranian base
in Syria Friday night, Arabic media reported Saturday.
According to reports on Lebanon’s Al-Mustaqbal TV
and the Saudi-owned Al-Arabiya network, accounts
on the Telegram messaging app tied to Iran’s Revolutionary
Guard Corps have been reporting 12 fatalities,
while also reporting the names of those killed."

[SunkenCiv]

Interesting second source. Plausibility increases due to the fact that the official word from Syria is so fast in arriving, and downplays what happened.