Italian news reports say a cargo ship has slammed into the port in Genoa, toppling the control tower and killing at least three people.

According to The Guardian, Italian news agency LaPresse says half a dozen people remain unaccounted for early on Wednesday, May 8, with some believed trapped in the elevator of the control tower. Four people have been hospitalized.

LaPresse identified the ship as the Jolly Nero of the Italian shipping line Ignazio Messina & C. Its website says the Messina Line has a fleet of 14 cargo ships.

Images from the port shown on Italian television early on Wednesday showed the control tower tilted to its side.