Updated at 20:40

A 21-YEAR-OLD MAN has been charged with the murder of two US airmen at Frankfurt Airport yesterday, and the attempted murder of three other people.

Two men were killed and another two injured, one critically, when a gunman opened fire on their bus outside Terminal 2 of the airport.

The suspected gunman was restrained at the scene and arrested.

A German security official said earlier today that the man had confessed to targeting US military members.

He has been identified by family members in northern Kosovo as Arid Uka, and his family are understood to have been living in Germany for 40 years.

A Pentagon spokesperson said that the four military men involved in yesterday’s shooting were en route from their base in Britain to Afghanistan. The Pentagon also said that one of the key aspects of the investigation into yesterday’s shooting is whether the shooter acted alone or had assistance.

German authorities say their investigation has so far concluded that he acted alone, but added that “there are signs that this is about a radicalised Muslim”.

A US law enforcement official told the AP that Uka wasn’t on any US terrorism watch list. The FBI has sent agents to Frankfurt to assist in the German investigation.

Arid Uka’s neighbours in Frankfurt said they were shocked at the incident and described him as someone who kept to himself, but didn’t seem unfriendly.

- AP