[FONT=Verdana]A second-floor concrete patio collapsed after workers used a jackhammer on it, police said.[/FONT]

[FONT=Verdana]A 21-year-old Gloucester man was killed Monday during a construction accident at an apartment building in the midtown section of Newport News, police said.

Emergency dispatchers received word of an industrial accident at 10:05 a.m., and a police officer reached the scene about two minutes later, Newport News police spokesman Lou Thurston said.

The officer found Dennis Wayne Dameron II, an employee with Moffit Demolition, pinned under debris from a second-floor concrete slab patio that had collapsed. Paramedics arriving at the apartment building on Adams Drive, just east of Jefferson Avenue, pronounced Dameron dead at the scene, Thurston said.

An investigation indicated that other workers were using a jackhammer on the patio when it collapsed and pinned Dameron, Thurston said.

Newport News homicide detectives are investigating the case, which is standard procedure for all unattended or unnatural deaths within city limits.

The Virginia Department of Labor and Industry also is investigating.[/FONT]