An illegal immigrant taking advantage of the Deferred Action for Childhood Arrivals (DACA) program was arrested by Rochester Police for making “a credible threat against East High School.” She’s now been turned over to ICE, according to authorities.

According to WHAM, 21-year-old Abigail Hernandez, a student in the Rochester City School District, posted a credible threat on the East High School Facebook page. The threat said, “I’m coming tomorrow morning and I’m going to shoot all of ya bit**es.”

Deputy Mayor Dr. Cedric Alexander said police were notified of the posts by district staff on February 16.

From WHAM: RPD Deputy Chief La’Ron Singletary said it took investigators days to make an arrest because the threats came from a fictitious social media account. It took time for investigators to track down the person to whom the account belonged.

When officers responded to the home of Abigail Hernandez on February 20, they said they found a shotgun inside the home. Police did not clarify if the shotgun was registered to Hernandez or anyone living at the home in which it was discovered.

Hernandez was arrested and charged with making a terroristic threat. She was remanded to the Monroe County Jail at the time in lieu of $15,000 bail.

During the investigation, Immigration and Customs Enforcement (ICE) agents determined that Hernandez was an illegal immigrant who had taken advantage of former President Obama’s DACA program.

Alexander said he doesn’t yet know if Hernandez is being charged as an adult, and she has no prior arrests.

“The quick thinking of school staff and the tenacious work of the investigators of the police department following through on this Facebook post lead to the arrest of Abigail Hernandez and the recovery of a shotgun,” a statement from the Rochester Police Department said.

In the video below, you may see footage of Rochester Deputy Mayor Dr. Cedric Alexander and Deputy Chief La’Ron Singletary speaking at a news conference from Friday afternoon.