"At H & M we always aim to offer products that we believe our customers will appreciate," the spokesperson said.
"The print on this sock represents a Lego figurine, any other meaning is entirely coincidental and we apologise if this motif has offended anyone."
But it's just the latest headache for the Stockholm-based company.
Earlier this month, H & M was also forced to apologise and remove ads featuring a black child model wearing a hoodie bearing the words "coolest monkey in the jungle" after the company was accused of racism by customers and celebrities alike.
Huge international stars including NBA star LeBron James, rapper Diddy and singer The Weeknd were just some of the household names to publicly criticise the company at the time.
The Weeknd, who had previously collaborated with H & M and performed at its Spring 2017 fashion show, went one step further, saying he would cut all ties with the brand as a result.
"Woke up this morning shocked and embarrassed by this photo. I'm deeply offended and will not be working with H & M any more," he posted on Twitter alongside an image of the ad.
The company announced it had appointed a diversity leader following the hoodie scandal and said the backlash "demonstrates so clearly how big our responsibility is as a global brand".
The multinational retailer sells budget-friendly shoes, clothing and accessories for men, women, teenagers and children as well as homewares.
It is the second-largest global clothing retailer, behind Zara's parent company Inditex, with more than 4500 stores across 62 countries and a workforce of more than 132,000 people.
