Five people were busted Wednesday during a raid at a Queens home where “fatal doses” of fentanyl-laced drugs were found stashed down the hall from a 10-year-old boy’s bedroom, NYPD officials.

Four guns were also discovered in the basement of the stash house on 100th Avenue near 208th Street in Queens Village when cops executed a pre-dawn search warrant, authorities and police sources said.

Cops unearthed four kilos of cocaine and heroin – believed to be mixed with fentanyl – down the hall from where a young boy slept, said Deputy Chief Jerry O’Sullivan, commanding officer of the Queens South Detectives Bureau, at an afternoon press conference.

“I don’t know how anybody could think it’s OK,” O’Sullivan told reporters, noting the recent death of a 1-year-old-boy who was exposed to fentanyl at his Bronx day care – which allegedly acted as a front for a drug mill.

“It is completely unacceptable,” he added.

Police arrested Ancil Hazelwood, 48 – the alleged ringleader of the operation – as well as four other suspects: Jessica Smythe, 28; Courtney Jackson, 32; Malik Lewis, 43; and Domonique Sierra, 37, in the blitz.

About four “kilo presses” also were recovered – indicating that “a large amount of narcotics was prepared at that location and used for distribution” at the home, O’Sullivan told reporters.

The young boy was a relative of one of the five people arrested, police said.

He was removed from the home, and “placed in the care of an additional person known to the department,” said O’Sullivan, who added that the Administration for Children’s Services was notified.

“I think the significance of it is, one: the amount; and two, the fact that it was operating as a 10-year-old child was living in the household,” O’Sullivan said.

The drugs recovered included 2,387 grams of the cocaine mixture, and 1,676 grams of the heroin compound, sources said.

The guns were a Smith and Wesson .45mm handgun, Taurus .9mm handgun, Taurus Judge .45mm handgun and a Zastava ZPAP85 pistol, according to the sources.

The suspects were charged with criminal possession of a controlled substance, criminal possession of a weapon, criminal possession of a narcotic drug and criminal use of drug paraphernalia, sources said.

Lewis and Jackson face an additional rap for acting in a manner injurious to a child, the sources said.

The bust came less than a week after little Nicholas Feliz Dominici died and three other children were hospitalized – one of them in critical condition – after inhaling fentanyl at Divino Niño Daycare in the Bronx, which officials say housed a covert drug operation.

“We take all this personal that [the] incident.. .happened in the Bronx – we’re well aware of that – and we’re going to continue to act on information that we receive about the illegal substances that are produced out here too in Queens,” O’Sullivan said Wednesday.