PHILADELPHIA – Last week the Philadelphia Police Department was asking for the public’s help to identify a group of people who allegedly attacked United States Marine Corps reservists in Old City. Now, police say they have one suspect in custody, according to phillymag. com.

Tom Keenan was arrested. He has been associated with Philadelphia’s Antifa movement.

Marine Corps reservists

Tom Keenan, 33, was arrested for the assault of Marine Corps reservists. (Philadelphia Police Department)

Investigators say that a group of men and women maced, punched, kicked, and robbed the reservists near Front and Chestnut streets on Saturday, November 17, around 3:20 p.m., just down the street from the controversial “We the People” rally.

Moreover, the group is also accused of calling the reservists “Nazis” and “white supremacists” during the attack.

Police released a video last week that showed three of the suspects, explaining that the video had been recorded near the rally earlier that day:

According to police, Keenan, a 33-year-old Mount Airy resident, turned himself last week.

He has been charged with two counts each of criminal conspiracy, aggravated assault, terroristic threats, simple assault, and reckless endangerment. Keenan, who was not charged with robbery, was released on bail and is scheduled for a preliminary hearing December 6.

However, a spokesperson for the Philadelphia Police Department says the case remains open. Detectives seek additional suspects. Police have not released the identities of the accusers, and it is unclear whether they participated in the “We the People” rally or the counter-protest.

It is believed that Antifa, an anti-fascism movement, has no real structural organization or leadership, but Keenan has been termed a leader of the group in Philly by various blogs and alt-right outlets.

In 2007, Keenan was arrested as one of the so-called “Love Park 4” after an incident involving a purported Ku Klux Klan rally in the well-known park near City Hall. He was charged with criminal conspiracy, institutional vandalism, resisting arrest, and criminal mischief, among other offenses, and eventually made a plea deal, pleading guilty to one summary offense of disorderly conduct, while all other charges were withdrawn, according to phillymag.com.