By the CNN Wire Staff
(CNN) - A fierce storm tore Friday evening through the town of Bel Air in northeast Maryland, causing buildings to collapse, peeling off roofs, flipping a pickup truck, and felling trees and light poles.
At least four people were injured, said Dave Williams, a spokesman for the Harford County Volunteer Fire Department, in an e-mail to CNN affiliate WMAR.
A number of roads were impassable, he said.
A number of people were freed after becoming trapped, the Baltimore City Fire Department reported on its Twitter page.
Radar detected a funnel cloud in the area at 6:41 p.m., 11 miles northeast of the town, CNN's weather department said.