An unidentified person drove a vehicle and "violently" crashed it into the Chinese Consulate-General in San Francisco on Monday, the consulate said.
The incident posed "serious threat" to life and safety of staff, and damaged facilities and property, the consulate said in a statement.
"We condemn this violent attack and reserves the right to pursue responsibility for the incident," it said, adding it has lodged solemn representations to the US side.
Reuters