Images showing the charred interior of the 15th-century cathedral in Nantes, France, appear to point at three separate outbreaks of flames having damaged the Gothic gem on Saturday. Arson is being investigated.

The diocese of Nantes released images on Facebook in the wake of the blaze. It completely destroyed the grand organ at the Cathedral of St. Pierre and St. Paul, blew out the stained glassed windows at the front of the building, and consumed a valuable 19th-century painting that had been sent from Rome.

Locals quickly spotted that, judging by the photos, there had been two separate fires on the ground floor, located meters away from each other. The third apparently broke out on the upper level.

© Facebook / Diocese of Nantes

© Facebook / Diocese of Nantes

© Facebook / Diocese of Nantes

© Facebook / Diocese of Nantes

Nantes Prosecutor Pierre Sennes confirmed there had been three fire hotspots in the building and announced that "an arson investigation has been opened."

The 39-year-old migrant detained following the blaze, according to French reports, worked for the diocese, and was angry over difficulties he had been having with his expired visa — although the authorities have cautioned against leaping to conclusions about his involvement in the fire.

Prosecutors said it would be "premature and hasty" to brand the migrant, who was apparently responsible for locking the cathedral up the day before the fire, as an arsonist.

It appears he was taken into custody because there are inconsistencies in his timetable — but Nantes public prosecutor Pierre Sennès has stressed that this is "normal procedure" and that, so far, the authorities are not working under the assumption that he started the blaze.

Jean-Charles Nowak, a clerk at the cathedral, has defended the unnamed migrant, saying he "adores" the building.

"I don't believe for a second that he could have set the cathedral on fire," Nowak said.

Gunfire is not an unusual sound in Peoria. Though the city is home to only 110,000 people, a CBS News investigation last year ranked it the 18th deadliest city in the country, coming in only two places behind neighboring Chicago.The shooting is at least the second such act of violence in the small city this weekend.

Two men were shot in the early hours of Saturday morning, with one dying in hospital. Police have no leads on the suspect, but the incident is under investigation. The death was the city's seventh homicide this year.

A factory located close to the town of Sheikh Hassan, in Northwestern Iran has caught fire, according to the Iranian Labour News Agency (ILNA).

Firefighters from the Iranian cities of Khosrowshah and Sardrud promptly arrived on the scene of the major blaze at a cellophane printing company situated southwest of Tabriz, ILNA reported. No casualties have been reported so far. The cause of the fire remains unknown.

Police and ambulance services have been dispatched to Broadgate Circle in Central London, after two people were stabbed. The area in the financial district is filled with restaurants and bars.

"Our officers are currently dealing with an isolated incident in Broadgate Circle, in which two people have been stabbed," City of London Police said in a statement.

The injuries are not life-threatening, according to initial reports.

Londoners have been urged to stay clear of the area, which is just outside the Liverpool Street tube station.

Friday evening's incident comes after two fatal stabbings the day before in the north London districts of Kilburn and Enfield. Data published by the Office of National Statistics on Friday showed that knife crimes in England and Wales had risen six percent to a record high over the past year, with homicides up by 10 percent.

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