The never-ending “blasphemous” Mohammed cartoons saga continues.

(AFP) — Four terror suspects arrested in Sweden at the weekend have ties to the Somali Islamist movement Shebab and were plotting an attack using bombs and firearms, a newspaper reported Monday.

Neither Sweden’s intelligence agency nor the police have confirmed the report, and have released few details about the arrests.

“Police suspect the men were about to carry out a terrorist attack with firearms and bombs,” Gothenburg regional daily GT said in its online edition.

An elite counter-terrorism unit arrested four people in Gothenburg, Sweden’s second city, and evacuated hundreds of people from a building hosting an art fair “after concluding that there was a threat that could endanger lives or health or cause serious damage,” officials said on Sunday.

Police then searched the building, breaking open several lockers, the paper said.

It is not known why the venue was seen as a target, and art fair organisers have not been given an explanation, GT said.

The paper speculated that it could have been because of a Swedish artist, Lars Vilks, who has received death threats from Shebab for depicting the Prophet Mohammed as a dog.

Vilks had said publicly he planned to attend the event but in the end did not.

He has faced numerous death threats and a suspected assassination plot since his drawing was first published by a Swedish regional newspaper in 2007, illustrating an editorial on the importance of freedom of expression.