Situation as reported on Aviation Herald:

Incident: RAK A320 near Tabuk on Apr 14th 2013, engine fire indication

SFS

Thanks for your sensible comments regarding my post (a rarity for Pprune?!). I do a fair bit of flying as SLF and I am a trained aircraft engineer but it was a long time ago. I worry that I might be in a situation where I think that something isn't quite right and then it's 'Should I mention it or not?'. I appreciate that we've had threads on this and it is a bit off-thread (sorry mods), but it is a worry.

RAK314
 

To update you regarding RAK314. ,, No engine fire but pax's ( more than 20) with 5 cabin crew saw the fire on the wing and info the PIC
Captain diverted and during approach crew informed pic no more fire , the change from mayday to pan pan and continue to land....
I think he did the right thing , what do you thinks guys... It was wing FIRE

I'd say this looks like bull***t ... in this age if 20+ pax are looking at a wing fire ?!? (never heard of any yet, let alone one that does not leave a mark anywhere after landing ... maybe St Elm fire :}) it would be over the news/youtube the second they land (if not faster).