A crazed Long Island man furious over taxes threatened to shoot workers at Nassau County’s government offices in a phone message that is part of a disturbing and growing local trend, officials said.

Robert Bogdanovic, 59, of Glenwood, allegedly made the terrifying call Wednesday, prompting county cops to rush to the old Executive Building in Garden City, police said. 

“[Bogdanovic] was making terroristic threats to county employees over the phone, placing them in fear for their safety,” police said of the arrest. 

After a short investigation, cops were able to trace the call back to Bogdanovic’s residence, where he was arrested without any resistance. 

He faces charges including making a terroristic threat, a felony that, if he is convicted, could land him up to seven years in prison and a $100,000 fine. He is set to be arraigned Thursday.

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A county employee said no staff were harmed or directly confronted in Wednesday’s incident, but confirmed that the building was placed on heightened alert following the call.

It is unclear if Bogdanovic had actually planned to carry out an attack or it was just a hoax, but the incident comes on the heels of multiple mass-shooting threats that have left Long Island on edge. 

In the last few months, police and school officials said they’ve been operating in a near-constant state of high alert as the number of threats — hoaxes or not — continues to rise.

The most recent was a fake 911 call in May that sent the Long Beach School District into a full-blown lockdown, with children forced to finish taking their finals as armed cops cleared the building. 

That same month, the Commack school district voted to approve a contract with a private security firm that would provide armed guards to every building in the district.  

Nassau County also saw a massive uptick in mass-shooting threats year over year — with dozens of threats in 2024 alone, up from just above 20 the year prior, according to police. No data for this year are available yet. 

“This year to date, there are 80 school threats … Last year at this time, we had 23,” Nassau County Police Commissioner Patrick Ryder told reporters at the end of 2024, adding that all 80 threats were later determined to be unfounded.