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

Italian news agency LaPresse says a half-dozen people remain unaccounted for early Wednesday, 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 Ignazio Messina & C. SpA Italian shipping line. According to its website, the Messina Line has a fleet of 14 cargo ships.

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