Following a fire on Thursday, the cathedral in Rouen, France, which was temporarily closed, was reopened to visitors on Friday.
According to the authorities, no major damage was found. Archbishop Dominique Lebrun spoke of "great relief".
The fire broke out at the top of the church spire on Thursday afternoon.
Videos circulating on the internet showed dark smoke rising above the tower of the Gothic church.
The church was evacuated and an exclusion zone was set up around the cathedral.
Fire as a result of welding work?
The spire of the church, which is made of cast iron, is currently being restored and has been surrounded by scaffolding and a cover for several weeks.
According to the preliminary findings of the fire investigators, the fire was caused by a "wrong action" during the renovation work. Archbishop Lebrun surmised that sparks may have flown onto plastic parts during welding work.
Rouen Cathedral, built in the 12th century, is one of the most important churches in France. On 30 May 1431, 19-year-old Joan of Arc, aka Joan of Arc, was burned at the stake in the market square as a heretic.
At 151 metres, the cathedral's bell tower is the tallest church tower in the country; until the completion of Cologne Cathedral in 1880, it was even the tallest building in the world.
The incident in Rouen was reminiscent of the devastating fire in the Notre-Dame church in Paris.
A major fire also broke out there during renovation work on 15 April 2019, destroying the roofs and roof trusses, parts of the vaults and the crossing tower.