PHILADELPHIA (CBS) — Philadelphia police seized more than $1 million worth of heroin from a Northeast Philadelphia home Tuesday night, according to investigators.

Undercover officers from the police department’s Narcotics Unit removed the heroin, along with a pound of cocaine, from the row home on the 2900 block of McKinley Street in Mayfair.

Sources indicate the home was being used as a stash house for high level dealers looking to sell the drugs to street level dealers. As a result of the month-long investigation, officers also discovered tools to mix and package the heroin.

Neighbors are concerned.

“It’s scary, especially in this neighborhood. There is a lot of children in this neighborhood. There’s always little children playing here, and I have children of my own,” said one woman who did not wish to be identified.

A total of about $1.5 million worth of heroin was discovered, according to police.

Two men have been arrested.