Three people have been arrested for allegedly throwing firebombs at a synagogue in the Swedish city of Goteborg.
No one was injured in the attack late Saturday during a youth event at the synagogue and the adjacent Jewish centre in Sweden's second-largest city.
Goteborg police spokesman Peter Nordengard said Sunday it is being investigated as an attempted arson. No injuries were reported.
Officials have increased security around the synagogue and at a Jewish centre in capital of Stockholm.
Witness Allan Stutzinsky told the TT news agency he saw a dozen masked youths who threw objects into the garden surrounding the synagogue.
Demonstrations have taken place in Stockholm and Malmo in the past week following US President Donald Trump's Jerusalem announcement on Wednesday (6 December).
Trump's official recognition of Jerusalem as the Israeli capital was met with worldwide dismay and sparked violence in the Gaza Strip and across the West Bank.
Two rockets were fired towards Israel but fell short, the Israeli army said. Israeli soldiers fired ammunition at Palestinians, who threw rocks at them across the border fence.
At the latest protest outside the US embassy in Lebanon, security forces fired tear gas and water cannons at protesters waving Palestinian flags.
Lebanon Communist Party leader Hanna Gharib described the US as "the enemy of Palestine."
World leaders have condemned Trump's decision to move the US embassy from Tel Aviv to Jerusalem.
Pope Francis said he was "profoundly concerned" about recent developments, describing Jerusalem as a city with a status quo that everyone respects.
Turkish President Recep Tayyip Erdogan warned that the move would "play into the hands of terror groups" and said Turkey could respond by cutting diplomatic ties with Israel.