The man whom police say firebombed a pro-life advocacy group's office has pleaded not guilty to the charges.

Hridindu Roychowdhury allegedly threw two Molotov cocktails into the offices of Wisconsin Family Action in May 2022.

WISCONSIN MAN CHARGED WITH FIREBOMBING OFFICES OF PRO-LIFE GROUP

Vandalism at Wisconsin Family Action

Damage is seen in the interior of the Wisconsin Family Action headquarters in Madison, Wisconsin, on May 8, 2022. (Alex Shur / Wisconsin State Journal via AP / File)

Roychowdhury, 29, is charged with one count of attempting to cause damage by means of fire or an explosive.

He was arrested in March at a Boston airport and was in possession of a one-way ticket to Guatemala, officials say. 

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Wisconsin Family Action Pro-Life Center

The Madison, Wisconsin, offices of pro-life group Wisconsin Family Action were attacked and vandalized by rioters in May 2022. (WKOW)

Law enforcement began pursuing Roychowdhury after tests matched his DNA to samples found at the crime scene, police said.

At the time of the firebombing, no one was in the building. 

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Wisconsin Family Action offices

Threatening graffiti is seen on the exterior of the Wisconsin Family Action offices in Madison, Wisconsin, on May 8, 2022. (Alex Shur / Wisconsin State Journal via AP / File)

One Molotov cocktail thrown into the Wisconsin Family Action office set fire to a bookcase while another failed to ignite.

Spray-painted graffiti was also found on the exterior of the building.