YouTube has said it disabled more than 200 videos this week that appeared to be part of a coordinated effort to spread misinformation about the ongoing protests in Hong Kong.
The video removals come just days after Twitter said it had suspended more than 200,000 accounts it linked to a Chinese government influence campaign against the protests.
Facebook also said it had suspended accounts and removed pages after being notified by Twitter.
Google, which owns YouTube, did not explicitly implicate the Chinese government, but said the videos were related to the similar disclosures from Facebook and Twitter.
Social media companies have faced criticism about the spread of misinformation on their sites and have taken actions to combat the spread in recent months.
Hong Kong is bracing for more anti-government demonstrations and a "stress test" of its international airport this weekend.
The protests in the Asian financial hub show no signs of abating and diplomatic tension between China and some Western nations rise.
The Canadian Consulate in Hong Kong said today it has suspended travel to mainland China for local staff.
It came just days after an employee of the city's British Consulate was confirmed to have been detained in China.
Multiple protests are planned for Hong Kong today, including a march by accountants to government headquarters and a "Baltic Chain" event where protesters will join hands across different districts in the Chinese territory.
In 1989, an estimated two million people joined arms across three Baltic states in a protest against Soviet rule that became known as the Baltic Way or Baltic Chain.
Additional reporting Reuters