MANILA -- The National Historical Commission of the Philippines (NHCP) on Friday issued a notice against disrespecting the country's national anthem after a clip of Internet sensation Bretman Rock "twerking" to it resurfaced online.

The commission, without mentioning Rock's name, said that it has received complaints over a video showing a man dancing to the national anthem.

It reminded everyone that doing so constitutes a violation of the Flag law and could lead to a P5,000 to P20,000 fine, or imprisonment of not more than one year.

The NHCP also said that the national anthem should be respected at all times, and that it shall not be played for mere amusement and entertainment purposes, with a few exceptions.

There was no reference to Rock's video in the letter, but the timing has led many to assume that it was calling out the Internet star.

It was right before the end of 2019 when the video of Rock lip syncing and then dancing to "Lupang Hinirang" began popping up again on online sites such as Facebook and YouTube.

The video, which was first uploaded by Rock on Instagram Stories three months ago, also saw him "twerk" to the national anthem for a few seconds. He has nearly 14 million followers on the site.

Moments after he originally posted it, Rock himself admitted that his video had been disrespectful and immediately took it down.

I just want to inform y'all, the video of Bretman singing and disrespecting our national anthem on his story was 3 mos ago. and he deleted it immediately and HE APOLOGIZED IMMEDIATELY. I HOPE U CONSIDER THAT. pic.twitter.com/mUclEs4Yzh

— andreng (@andrengsam) December 30, 2019

He has yet to react to the NHCP letter.

Rock is a Philippines-born vlogger who moved to Hawaii when he was 8. He has since become a bonafide online star, landing deals with several international beauty brands.

He was recently named the Beauty Influencer of 2019 at the E! People's Choice Award in Los Angeles, and made his New York Fashion Week debut last September after being invited to events by Elle Magazine and Vanity Fair.

Last month, he made headlines when he decided to donate part of the proceeds of his own game to a six-year-old fan with cancer.