A man who was critically injured after a stabbing at a railway station near Munich has died in hospital.

The 56-year-old had been on a stationary train in Grafing station when he was assaulted. Police had earlier said he was 50.

Three other commuters were also wounded during the attack, and one of those victims has life-threatening injuries.

Witnesses said the knifeman shouted “Allahu Akbar” as he targeted commuters, which means “God is great” in Arabic.

Forensic experts cordoned off the platform where the stabbings took place, which was covered in bloody footprints.

The attack happened at Grafing railway station near Munich

The attack happened at 5am in Grafing, a suburban town not far from Munich

It is believed the 27-year-old suspect, who was arrested at the scene, had used a knife with a 10cm blade.

Prosecutors have said the alleged attacker is not co-operating with the police, and a spokesman added: “The assailant made remarks at the scene of the crime that indicate a political motivation – apparently an Islamist motive.”terror stabbing attack Grafing Bahnhof train station

The man apprehended is a German national who was not known to the police and did not live in the region.

Bavaria’s interior minister, Joachim Herrmann, confirmed officials will examine whether the suspect was mentally disturbed – “perhaps because of a drug addiction”.

Several German media outlets have reported the alleged attacker is Paul H. from Hesse, a state in central Germany which is about 200 miles away from Munich.

Investigators have not confirmed whether it was a terror attack at this stage.

The three commuters who survived the stabbing, which happened shortly before 5am (4am UK time), were men aged 43, 55 and 58 years old. Two of them were cyclists.

The incident has caused delays across the city’s railway network.

“There is no longer any threat to the population,” said Michaela Gross, a police spokeswoman.