Police are investigating a threat made against Lewis and Clark High School on Instagram Saturday night.

According to a Spokane Public Schools alert notice sent out Sunday morning, the Spokane Police Department worked throughout Saturday night to investigate and determine the credibility of the social media threat.

The threat was made on the Instagram account Steven_Smith__4, and included the names of several female students and an apology for what may happen to the school in November.

The account wrote that “I still cant (sic) believe that I did not get caught yet,” and claimed an Asian or Latino student had been mistakenly arrested for last school year’s threats. The account is still active, but the post has been taken down.

In its alert notice, the SPS said that additional police officers and SPS resource offers would be at the school Monday “to ensure students and staff can attend school safely and uninterrupted.”

Former Lewis and Clark High School student Ryan Lee, who is Asian American, was arrested and charged last year in connection with threats posted to an Instagram account with an almost identical name.

The account apologized to “those who will not be alive the next day,” and replied to a comment writing, “I’m going to shoot up LC!!!!!!”

At that time more than half the student body chose to stay home from school the day the threats were posted online.

In August, a judge tightened Lee’s release conditions after he violated them by attending a church youth group.

Lee is also facing harassment and communicating with a minor for immoral purposes charges for allegedly sending sexually explicit messages to a 15-year-old girl in May. According to charging documents, the girl was sent threats and pornography from the Steven_Smith_4 account.