Google has blocked access to the hugely popular video app TikTok in India to comply with a state court's directive to prohibit its downloads, a person with direct knowledge of the matter told Reuters on Tuesday.

The move comes hours after a court in southern Tamil Nadu state refused a request by China's Bytedance Technology to suspend a ban on its TikTok app, putting its future in one of its key markets in doubt.

The state court had on April 3 asked the federal government to ban TikTok, saying it encouraged pornography and made child users vulnerable to sexual predators. Its ruling came after an individual launched a public interest litigation calling for a ban.