China's consulate in Los Angeles told its citizens in the area on Monday to strengthen personal security, after unrest in America's second-biggest city.
"Chinese citizens in the region (should) strengthen personal security measures, stay away from gatherings, crowded areas, or places with poor public security, and avoid going out at night or travelling alone," the consulate said in a statement.
They should also "closely monitor official announcements" and "raise their safety awareness", it added.
Security forces faced off with protesters in the city on Sunday, as unruly protests over federal immigration raids continued for a third day, with President Donald Trump deploying National Guard troops.
Trump, who has made clamping down on illegal migration a key plank of his second term, vowed the troops would ensure "very strong law and order".
The deployment in California -- the first over the head of a state governor since the Civil Rights era -- was "purposefully inflammatory," Governor Gavin Newsom said.
The National Guard -- a reserve military -- is frequently used in natural disasters, and occasionally in instances of civil unrest, but almost always with the consent of local authorities.
60 people arrested in San Francisco
About 60 people were arrested in San Francisco, police said late Sunday, after demonstrators in the northern Californian city gathered to protest against President Donald Trump's immigration raids.
San Francisco police "declared an unlawful assembly," they said on social media platform X. "Approximately 60 people were arrested, including juveniles."
The protest in San Francisco comes in the wake of demonstrations triggered in downtown Los Angeles by immigration raids that have resulted in dozens of arrests of what authorities say are illegal migrants and gang members.