Local media report a group of masked men hurled Molotov cocktails at the building in Gothenburg on Saturday night.
Three people have been arrested after an attempted arson attack at a synagogue in the Swedish city of Gothenburg, a spokeswoman for the Swedish Prosecution Authority said on Sunday.
Local media reported that a community centre adjacent to the synagogue was open for a youth event when around 20 masked men threw Molotov cocktails at the building on Saturday night (Dec 9).
The young people were said to have huddled in the basement and no injuries or damage to the synagogue were reported.
The motive for the attack was not immediately clear, but it followed anti-Semitic incidents in Malmö and the capital Stockholm over the weekend.
Demonstrations were held in both cities in protest against US president Donald Trump's controversial decision to recognise Jerusalem as Israel’s capital and to move the US embassy there.
Security has been tightened outside synagogues across the Swedish capital following the incident, news agency TT reported.