An unidentified individual hurled manure in front of national security adviser Jake Sullivan's home on Monday, initiating a response from the Secret Service and a bomb squad.

A law enforcement official told Politico that the suspect tossed a "small amount" of manure from a car window. The incident led to a quick response from the Secret Service and Washington, D.C., police with a bomb squad in tow.  

Secret Service spokesperson Anthony Guglielmi would not confirm the substance was manure but said they responded to a "suspicious package" near Sullivan's home.

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"The Metropolitan Police Department's Explosive Ordinance Disposal team responded and declared the scene as safe," Guglielmi told the New York Post. "The incident is under investigation."

The law enforcement official also confirmed to Politico that an investigation was underway. 

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Last April, Sullivan dealt with a confused, intoxicated man who wandered into his house in the middle of the night in what the New York Post called a "stunning security breach."

Sullivan told the drunk man to leave, and after he did, he alerted his Secret Service detail about what had transpired. 

Fox News Digital has reached out to the Secret Service for comment on the manure incident.