Shafaq News/ The prime minister of the Kurdistan region of Iraq, Masrour Barzani, on Thursday expressed solidarity with Greece in the aftermath of the deadly train collision that killed at least 46 persons.

"Saddened by the recent tragedy that happened near Larissa, Greece," Prime Minister Barzani wrote in a tweet.

"My thoughts are with the victims and their families, and I wish the injured a speedy and full recovery," he said.

A passenger train collided head-on with a cargo train late on Tuesday, throwing entire carriages off the tracks and killing at least 36 people, many of them students, in the country's deadliest rail crash in living memory.

Passengers described a "nightmarish" crash which shattered their train just before midnight near the central town of Larissa. It had departed from capital Athens and was headed to the northern city of Thessaloniki after a long holiday weekend.