ROME, Sept 23 (Reuters) – Italy’s Culture Minister Alessandro Giuli ordered the one-day closure of the Colosseum ‌on Wednesday as a mark of respect ‌after a worker was killed overnight in an accident.

Andrea Moretti, a 22-year-old ​technician, died after falling several metres while installing a new lighting system inside the ancient Roman arena.

Built 2,000 years ago, the Colosseum was the biggest amphitheatre in ‌the Roman Empire, ⁠used to host gladiator fights, executions and animal hunts. It is Italy’s most visited ⁠tourist attraction.

“The news of the tragic death of Andrea Moretti, a skilled worker who died overnight … has deeply ​shocked and ​saddened us,” Prime Minister ​Giorgia Meloni said.

Culture Minister ‌Giuli also ordered the suspension of all construction and maintenance work at the Colosseum until further notice.

Initially, only a partial closure of the monument was announced, but this drew protests from Italy’s biggest union, the ‌CGIL.

“Humanity comes before tourists,” said Natale ​di Cola, the CGIL’s Rome ​chief, adding that ​the union was calling on Giuli to ‌explain all the circumstances surrounding ​Moretti’s accident.

The ​incident comes less than a year after the death of a Romanian worker who was trapped ​for hours under ‌the rubble of a partially collapsed medieval tower ​near the Colosseum last November.

(Reporting by Anna ​Uras, editing by Gavin Jones)