Looks LN1626 (Libyan Airlines) pulled a u-turn and headed back to Indonesia when they saw the weather at 23:10.
They were just ahead of 8501, who of course kept flying straight into that monster.
I think LN refers to Lion Air a budget Indonesian airline rather than Libyan airlines, which would be unlikely to be flying in that area.
Satellite WX shot at the time/location of the incident (nasty): https://twitter.com/EarthUncutTV/status/549052183094652929/photo/1