MASSACHUSETTS – A Massachusetts man was arrested and charged on Tuesday with threatening on Facebook to burn down a Boston mosque in the wake of the November attacks in Paris, where Islamic State gunmen and suicide bombers killed 130 people.

Patrick Keogan, a 44-year-old resident of the Boston suburb of Winchester, was charged with making a criminal threat over the internet and with being a convicted felon illegally in possession of ammunition, federal prosecutors said.

The day after the deadly Paris attack, Keogan posted an image on the Facebook page of the Islamic Society of Boston Cultural Center showing a mosque in flames with the caption “burn your local mosque,” prosecutors said.

In court papers, they said leaders of the Islamic Center opted to report the threat because it followed so closely on the Paris attacks, “although it is not uncommon for the ISBCC to receive hateful and anti-Muslim messages.”

Keogan could be sentenced to up to 10 years in prison if convicted on the charges.

A lawyer for Keogan could not immediately be reached for comment.

Yusufi Vali, executive director of the Islamic Society, thanked the FBI and prosecutors for pursuing the case.

“This sends a really clear message to the Boston, Massachusetts, community and really the whole world that Boston embraces its Muslims,” Vali said.

When FBI officials interviewed Keogan by phone before his arrest, he said he was “sorry and that he needs to smarten up as he is too old to act this way,” according to court papers. Keogan also told the FBI that he had not intended to harm anyone.

Prosecutors said an investigation into Keogan revealed he was buying ammunition, which he was legally prohibited from doing after convictions on charges including assault and battery.