Police say a suspicious vehicle carrying a green military bag was found outside of 10-year-old first son Barron Trump's school in Manhattan on March 13.
Adding further to suspicion, the license plate of the 1993 Chevy pickup parked outside of Columbia Grammar and Preparatory School did not match the Vehicle Identification Number, reports the New York Post.
The NYPD Bomb Squad investigated while the school stopped students from leaving the campus, CBS reports.
"My teacher had no clue what was going on but he was just saying 'Be quiet,'" said a senior at the school, reports New York Daily News. "These two girls that were next to me were pretty scared because they were getting Snapchats from their friends saying there was a bomb threat, and one girl was crying."
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Around an hour or so later, authorities finished their investigation and deemed the truck and the green bag safe.
New York City is spending about $24 million to protect Trump Tower, Barron and first lady Melania Trump's residence, Reuters reports.
"Trump Tower itself now presents a target to those who wish to commit acts of terror against our country, further straining our limited counterterrorism resources," New York City Police Commissioner James O'Neill said.
Officials are demanding Congress reimburse the state for the added costs.
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"We are seeking full federal reimbursement for all costs incurred related to security for President Trump and his family at Trump Tower," said Freddi Goldstein, a spokeswoman for New York City Mayor Bill de Blasio.
Democratic Rep. Carolyn Maloney of New York agrees, adding New York City should not have to pay for a "national security obligation" and that "Congress must provide city taxpayers a full reimbursement."
Back in Washington, D.C., President Donald Trump is dealing with a different set of security-related problems.
On March 10, Jonathan T. Tran, 26, from California got onto the grounds of the White House, but was arrested before he could enter the building, CNN reports
"Two cans of mace were found on Tran, including one in his jacket pocket," Secret Service Officer Wayne Azevedo said, adding that Tran also carried a letter for Trump.
Tran may not have had malicious intentions.
"In the letter, Tran mentioned Russian hackers and said he had information of relevance," added Azevedo. "Tran alleged that he had been followed, and his 'phone and email communications [had been] read by third parties,' and that he had 'been called schizophrenic.'"