An Islamist website on Sunday identified the bomber behind Saturday's attacks in the Swedish capital Stockholm as Taimour Abdel Wahab and published a photograph it said was him.
A top Swedish intelligence official said Sunday that the twin blasts that rocked a shopping street in central Stockholm was a suspected suicide attack, but was unsure if it was a one-off.
Politicians, foreign embassies in Stockholm and European leaders have joined Prime Minister Fredrik Reinfeldt in condemnation of Saturday's suicide bombing on one of the capital's busiest shopping streets.
A Swedish Armed Forces (Försvarsmakten) employee warned an acquaintance to stay clear of an area in central Stockholm on Saturday where, several hours later, two explosions went off in what is being called a terrorist attack.
Saturday's suicide bomb attack in Stockholm could have resulted in many casualties if it had been carried out correctly, a terrorism expert told news agency TT on Sunday.
Saturday's suicide attack in Stockholm is believed to have been carried out by a 29-year-old man from the town of Tranås in southern Sweden.
Swedish prime minister Fredrik Reinfeldt has urged caution in the wake of the terror attack that rocked central Stockholm on Saturday evening, warning on Sunday against drawing hasty conclusions.
The imam of Stockholm's grand mosque on Sunday condemned twin blasts which targeted shoppers in the Swedish capital, killing one person, believed to be the bomber.
A spokesperson for Swedish security service Säpo labeled as a terror crime the suicide attack that shook central Stockholm on Saturday evening, leaving one person dead and wounding two others.