Four people died after 14 people were shot at a family gathering in Stockton in northern California on Saturday night, police said.
The shooting took place at a child's birthday party, Stockton's Vice Mayor Jason Lee said in a Facebook post.
"I am in contact with staff and public safety officials to understand exactly what happened, and I will be pushing for answers," he said.
Police said they received reports shortly before 6:00 p.m. local time (0600 GST) of a shooting that occurred near the 1900 block of Lucile Avenue in Stockton.
"We can confirm at this time that approximately 14 individuals were struck by gunfire, and four victims have been confirmed deceased," San Joaquin County Sheriff's Office said in a post on X.
"This is a very active and ongoing investigation, and information remains limited. Early indications suggest this may be a targeted incident, and investigators are exploring all possibilities."
Authorities have not provided any details about a shooter.
Thousands of protesters took to the streets in Minneapolis and students across the United States staged walkouts on Friday to demand the withdrawal of federal immigration agents from Minnesota following the fatal shootings of two US citizens.
France has lowered the safety limit for cereulide toxin in infant formula, aiming to strengthen protections after several major groups ordered worldwide recalls over contamination concerns, the farm ministry said on Saturday.
An ally of Indian Prime Minister Narendra Modi has proposed a bill to ban social media for children, as the world's biggest market for Meta and YouTube joins a global debate on the impact of social media on young people's health and safety.
The death toll from a landslide a week ago in Indonesia's West Java province has risen to 49, the country's main rescue agency Basarnas said on Saturday, with 15 still missing.
The Syrian government and Kurdish forces declared a ceasefire deal on Friday that sets out a phased integration of Kurdish fighters into the state, averting a potentially bloody battle and drawing US praise for a 'historic milestone'.
US President Donald Trump said it was dangerous for Britain to be getting into business with Beijing, as Prime Minister Keir Starmer lauded the economic benefits of resetting relations with China during a visit there on Friday.
Israel has released 15 bodies of Palestinians killed during its war in Gaza, three days after recovering the remains of the last hostage, in moves mediators hope will pave the way to carrying out the next stage of US President Donald Trump's peace plan.
There is a low risk of the deadly Nipah virus spreading from India, the World Health Organisation said on Friday, adding that it did not recommend travel or trade curbs after two infections reported by the South Asian nation.
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Thousands demonstrate in Minnesota and across US to protest ICE
France tightens infant milk rules after recalls
Modi ally proposes social media ban for India's teens as global debate grows
Indonesia landslide death toll rises to 49, agency says
Syrian government, Kurdish-led SDF agree integration deal
Trump warns Britain on China ties as Starmer hails progress in Beijing
Israel releases 15 Palestinian bodies as truce deal shifts to next phase
WHO sees low risk of Nipah virus spreading beyond India
