Part of the roof of AFAS Stadion, home of Eredivisie side AZ Alkmaar, collapsed on Saturday afternoon. 

Thankfully, De Telegraaf are reporting that the stadium was empty and no one was harmed in the incident, but it's certainly a very worrying sight. 

The early suggestion is that stormy weather in the Dutch city caused the roof to fall, but these are unconfirmed. 

The stadium, with a capacity of over 17,000, is only 13 years old after being completed in 2006, but there will now be a big clean-up operation to ensure that AZ will be able to play there this season.

Luckily, the team are set to play a league fixture away to RKC Waalwijk away on Sunday, but they are scheduled to play a home tie against Mariupol in the Europa League on Thursday. 

Judging by the damage to the roof, which has fallen onto a stand, it will be a tough ask for the AFAS stadium to be ready to host a game next week. 

You can see images of the collapsed roof below. 

The incident has certainly caused a lot of damage, but things could have been worse. It's incredibly lucky that no-one was inside the ground and thankfully, it didn't happen during a game. 

Just last Sunday, AZ were playing at home to Fortuna Sittard in their Eredivisie opener in front of a crowd of 12,858. 

Goals from Ron Vlaar, Oussama Idrissi, Myron Boadu and Yukinari Sugawara gave the hosts a comfortable 4-0 win, that saw them top of the table after the first weekend of the campaign. 

After such a solid start, AZ will be hoping to finish in the top four again this season. In 2018/19, the 'Cheeseheads' finished behind Ajax, PSV and Feyenoord. 

That fourth-place finish saw them enter the second qualifying round for the Europa League and they will be hoping to reach the competition proper. 

But, with the collapse of the AFAS Stadion's roof, they may not have home advantage in any of their ties.