Sweden campus shooter fired 'more than 50 shots'

The suspected gunman in Sweden's worst mass shooting fired more than 50 shots and had lived in isolation for several years, police said on Tuesday, revealing more details about the massacre.

On Tuesday of last week, a 35-year-old man -- identified as Rickard Andersson by Swedish media -- entered an education centre for young adults and opened fire, killing 10 people before apparently turning the gun on himself.

Described as an unemployed recluse with psychological problems, he is thought to have acted alone in the massacre at Campus Risbergska in the town of Orebro, 200 kilometres (125 miles) west of Stockholm.

He had fired more than 50 shots, police said in a press release on Tuesday, confirming four guns had been seized by the police -- three at the scene together with a lot of ammunition and one at the gunman's home.

The suspect had purchased both ammunition and smoke grenades shortly before the shooting.

The man had lived isolated in his apartment since 2016, "with little contact with other people", and it was still unclear how he had interacted with the digital world, police said.

He had been enrolled at the school twice, once in 2013 and again between 2019 and 2021.

A week after the massacre, police are still trying to establish a clear motive for the shooting, but it appeared the victims had been selected randomly.

"The victims are a mix of age, ethnicity and gender. They have worked as teachers or studied," police said.

Police have not disclosed the nationalities of the victims -- seven women and three men aged 28 to 68 residing in Orebro.

According to broadcaster SVT, a majority of the victims had a foreign background.

"They came from different parts of the world and had different dreams," Swedish Prime Minister Ulf Kristersson said in a speech on Sunday.

Kristersson urged people not to speculate on the attacker's motives, but stressed that he understood the concerns of "people of foreign origin who show a particular sense of vulnerability".

Syria's embassy in Stockholm has expressed condolences to two Syrian families, without giving details.

Bosnia's foreign ministry said one of its nationals was among the dead, while another had been wounded.