A part-time instructor at York University faces charges for two alleged sexual assaults on the TTC last month, the school and police said Friday.

The 51-year-old Toronto man was arrested yesterday, police said in a news release.

The alleged incidents reportedly happened on the subway on January 3 and January 16, 2020.

The two victims were seated at the time of the alleged assaults, police said.

Investigators were alerted by the two victims and a witness after a social media post that documented the aftermath of one of the alleged incidents was shared widely online.

In a statement, a spokesperson for York University said the school is aware that one of its part-time instructors was arrested in relation to a sexual assault investigation.

"The instructor has not taught on campus since January 20," the statement said.

The university issued a bulletin encouraging students to seek support from various services offered on campus.

The accused is scheduled to appear at Old City Hall Court on March 19.

Anyone with potentially valuable information about the alleged sexual assaults is asked to contact police.