Four of the Avengers crashed into a dangerous Lima neighborhood over the weekend when Spider-Man, Captain America, Thor and the Black Widow broke down a door and arrested several wanted drug dealers.

The four “superheroes” were actually members of a special Peruvian police force purporting to be promoting a Halloween concert, police said in a statement Tuesday.

In the operation, dubbed “Marvel” after the comic book editor of The Avengers, four officers dressed as superheroes nonchalantly walked down a street in Lima’s San Juan de Lurigancho neighborhood on Saturday.

Upon arriving at a certain house, Spider-Man and his friends whipped out special equipment and forced open a steel door, allowing 10 backup police officers to enter and arrest three men and a woman.

According to the police, the surprised inmates initially thought it was a Halloween joke.

“In this building, a whole family was dedicated to the micro-commercialization of drugs. The drugs were to be sold at a nearby park,” said Police Colonel David Villanueva.

Police seized 3,250 small packets of plain cocaine paste — a crude extract made from coca leaves — along with 287 bags of cocaine and 127 bags of marijuana.

A kilo of cocaine paste costs about $380 in Peru, while a kilo of cocaine hydrochloride, the purest form, costs about $1,000.