Yet more evidence to suggest that Jon Snow is alive has surfaced after the character's actor, Kit Harington, was spotted in Belfast, where the rest of the Game Of Thrones cast have arrived in preparation for season six.

Throughout July, several members of the public have seen Harington, 28, out and about on the streets of the Northern Irish capital, with the most recent sighting taking place on 20 July.

According to one eyewitness who bumped into Harington and shook his hand, the Pompeii actor stated that he was not allowed to have pictures taken, most likely to avoid spoiling the true fate of his beloved character, who was believed to have died at the end of season five.

Adding fuel to the fire, the actor's co-stars Emilia Clarke, who plays Daenerys Targaryen, and Nathalie Emmanuel, who stars as her sidekick Missandei, announced they had arrived in the city to attend table readings for the upcoming season.

Terminator Genisys actress Clarke posted on Instagram:

Well look who I ran into at a certain airport ready for a certain read through..?! @nathalieemmanuel #seasonsixiscoming #buckleupkids #dragongliding

A photo posted by @emilia_clarke on

Since the shocking season five finale episode aired in June 2015, fans have thrown themselves into a frenzy trying to come up with theories that prove the Night's Watch commander did not die after being repeatedly stabbed by his fellow men.

One theory suggests that Stannis Baratheon's mistress Melisandre, who was seen returning to The Wall moments before Snow was stabbed, will use her powers to bring him back to life.

Addressing the speculation, Carice van Houten who plays the Red Priestess, told reporters at Comic-Con in San Diego: "No, he can't be dead. No!

"I've seen that on the internet; like I've seen stuff saying 'we'll forgive you if you save him'."

Game Of Thrones season six is expected to premiere in spring 2016 although a date is yet to be confirmed.