Baltimore County police detained three people Wednesday after county officers and agents from the Drug Enforcement Administration executed a search warrant at a Towson home as part of a narcotics investigation.

Police said the raid occurred about 10:15 a.m. in the 700 block of Walker Ave. and involved police, county Fire Department personnel and federal agents. Two men and a woman were arrested, according to police, but charges had not been filed as of Wednesday evening. Police did not identify those arrested.

County police spokesman Lt. Wes Fischer said the search uncovered chemicals related to drug manufacturing, but he declined to comment further.

Crews were still at the scene around 5 p.m., working to remove materials from the house.

Neighbors said they were not familiar with the occupants of the house and had not noticed unusual activity there. Darnell Edwards, 19, who lives in a nearby apartment complex, said he was shocked Wednesday to see so many law enforcement vehicles in the neighborhood.

"This is a real peaceful place," said Edwards, who said he moved to the community a few months ago. "There's lots of friendly people."

Edwards said the raid has him concerned about what other activities may be taking place in the area.

"It's a shame to have drugs around here, where people have families and kids," he said.