Prague  - The Czech police have charged two civil engineers in the case of a train crash that last week killed seven and injured more than 60 passengers, police said Friday.

On August 8, a packed international express train rammed into a road bridge in the north-eastern Czech Republic that had collapsed on the tracks seconds before.

The overpass had been under reconstruction.

The men, both aged over 50, were responsible for safety during the work on the bridge, police said.

"The structure was very unstable," police investigator Jiri Jicha told reporters. "The two responsible employees had failed to correct the defect and thus are being prosecuted."

The damage resulting from the crash is estimated at 176 million koruny (10.5 million dollars), Jicha said.

The engineers face up to 10 years in prison for a crime of endangering the public. (dpa)