SINGAPORE - American doughnut company Krispy Kreme launched its Nutella doughnuts in Singapore on Saturday (March 17).

Videos of the chocolate hazelnut spread-filled rings went viral online earlier this week, with a clip by international media channel VT garnering more than 2.6 million views since Monday.

On Friday night, Singapore's Krispy Kreme shared in a Facebook post that it was launching its Nutella-filled Original Glazed doughnuts islandwide on Saturday.

The doughnuts, which cost $3.30 per piece, are 70 cents pricier than the regular Original Glazed doughnuts.

They are limited edition and sold on a first come, first served basis.

A spokesman for Manna360, the master franchisee of Krispy Kreme, told The Straits Times that the treats were still available in stores as of 11am on Saturday.

There is no limit to the number of doughnuts a customer can buy, but the stores do not accept reservations.

The doughnut chain is selling the sweet treats at all its nine outlets, with its Jurong Point store opening the earliest at 8am.

The doughnuts, dubbed Hazelnut Original Glazed or Hazelnut OG, were sold out in four outlets by 2pm.

Krispy Kreme said it would be replenishing stocks in the four stores at Northpoint City, Changi Airport, Jurong Point and Paragon at around 4pm.

Founded in 1937 in North Carolina, Krispy Kreme has more than 1,300 retail stores in 31 countries.

It opened its first outlet in Singapore in the basement of Tangs Orchard in October 2013, before setting up a second store in Income at Raffles in 2014. It later opened more outlets in areas like Suntec City Mall, Paragon and VivoCity.

Flavours it sells in Singapore include Reese's Peanut Butter, Speculoos Cookie Butter and New York Cheesecake.