PROSECUTORS have closed the criminal investigation into the case of a man who blew himself up in a Stockholm street after concluding that he acted alone.

Taimour Abdulwahab, who lived in Luton, died in the explosion on December 11, 2010 in the Bryggargatan area of the Swedish capital.

Another man was convicted of transferring money to him, sending a total of £5,725 to a bank account in Abdulwahab's name in the knowledge that it could be used for terrorism purposes.

Nasserdine Menni, an Algerian national, was sentenced to seven years at the High Court in Glasgow in August 2012 following a trial.

However, his sentence was cut to three years in June 2014 after an appeal.

In a statement, prosecutors in Sweden said that the criminal investigation was now closed.

Agnetha Hilding Qvarnstrom, deputy chief prosecutor, said: "A thorough assessment and evaluation of the available data suggests that Taimour Abdulwahab acted alone, with no accomplice in the actual attack."

During the course of their four-year investigation Swedish police carried out around 1,600 interviews with people who were around the scene of the explosion.

They also interviewed people who were relatives of or associated with Abdulwahab, who arrived in Sweden from England on November 19, 2010.

They requested judicial assistance from Iraq, England and Scotland, though could not obtain the information they requested from Iraq due to the situation in the country.

The deputy chief prosecutor said: "From England, we requested judicial assistance regarding several issues with a bearing on the investigation, including interviews with Taimour Abdulwahab's wife, her sister, mother and brother-in-law, as well as with some British friends of Taimour Abdulwahab.

"Information from banks, mobile phones and computers was also requested, as was information on Taimour Abdulwahab's journeys. We received assistance from England and the results were communicated to Sweden."

They also carried out several interviews, including with Menni.

Abdulwahab rigged an Audi car with explosives in the hope that the blast would drive people to Drottninggatan, a busy shopping street about 200 yards away, where he was waiting to set off two more devices strapped to his chest and back.

The car bomb never went off and, after setting fire to the Audi, he was unable to detonate the other two explosives as planned.

He made his way down a side street off Drottninggatan and, in an apparent attempt to fix the faulty trigger up his sleeve, set off the bomb on the front of his body, killing only himself.