A monthslong investigation into a Logan charter school employee found the man allegedly had thousands of pornographic images of child sexual abuse on his phone.

Ivan Gabriel Cardona Davila, 27, was arrested last week after police searched his home. Davila worked as a math aid and tutor for Fast Forward Charter High School, Principal Jill Lowe said. The school reported 259 students were enrolled during the 2019-20 school year.

Lowe said she found out about Davila’s arrest the day it happened and that he no longer works for the school. She said students haven’t made any misconduct complaints against Davila, but that school officials are now conducting an internal investigation because of the criminal case.

Snapchat, a photo sharing and messaging app, reported Davila’s account to Logan police in April, according to the probable cause affidavit. The company told police that the user had shared nearly 50 pornographic images of children.

Police connected Davila to the account using his email and IP addresses. Officers served a search warrant at his home on July 14, the document said.

The affidavit also states that police found 16,000 pornographic images, most of them involving children, on Davila’s phone, as well as five guns and a cannabis vape pen in his room.

Officers arrested Davila that day. On the way to jail, he said he knew viewing child pornography was wrong but could not stop, according to the probable cause statement.

Davila was booked into jail on suspicion of 20 counts of sexual exploitation of a minor and other drug- and gun-related counts. He is being held without bail.