A convicted Quebec pedophile who ran a Chinese-boxing school in the Eastern Townships has been arrested and could face new charges of sexual assault against children, police said.

Provincial police arrested the man on Thursday morning after looking for him for a week following a complaint from the father of one of his boxing students.

He will likely face several sexual assault charges in connection to incidents involving 10-year-old children that police allege have taken place over the last six months, provincial police spokesman Ronald McInnis said.

Until a few weeks ago, the man was running a Chinese-boxing school near Saint-Hyacinthe, southeast of Montreal. The father of one of the students at that school became suspicious and contacted police, explained provincial police spokesman Ronald McInnis.

"He [did some] investigation, and when he saw this guy had done this kind of thing, he called [police]," McInnis told CBC News.

Police wouldn't confirm whether the children he is suspected of assaulting were students at the Saint-Hyacinthe boxing school.

The man was previously convicted on sexual assault charges against children he taught in the late 1990s. He served a four-year sentence for his crimes.

His release conditions included an order that he stay away from minors under 14.

All of the man's recent martial arts students are under 14, police said.

Police said they found the man Thursday morning at a Sherbrooke-area hospital, where he was being treated for a minor medical problem.

He's under round-the-clock police surveillance until his arraignment, which should take place in the next few days, McInnis said.