Rescue workers are seen at the collapsed Morandi Bridge in the Italian port city of Genoa, Italy August 14, 2018. REUTERS/Stringer

MILAN (Reuters) - At least 20 people died and 16 were injured in the collapse of a motorway bridge in the Italian city of Genoa, a senior official at the country’s civil protection agency said on Tuesday.

“The data will be updated and we expect the toll to rise,” Luigi D’Angelo told reporters at a briefing.

He added that some 30 cars and between five to 10 trucks were on the road when a section of the bridge crashed down.

D’Angelo said the information available to authorities was not yet sufficient to establish the causes of the disaster.