SINGAPORE - Supermarket chain Sheng Siong has apologised after a customer found a number of large maggots wriggling in a carton of quail eggs last Tuesday (April 16).

The incident comes less than two months after a customer found several maggots in a carton of quail eggs he bought from NTUC FairPrice.

And in January this year, another customer was given a refund after finding maggots in the live crabs he bought from FairPrice Finest.

Footage of the most recent incident was uploaded to citizen journalism website Stomp on Monday.

The customer, who wished to be known only as Amy, told Stomp that she had bought the eggs, which were due to expire last Friday, from a Sheng Siong outlet at Junction Nine mall in Yishun on April 11.

When she opened the carton to cook the eggs last Tuesday, however, she spotted "big, fat maggots" wriggling next to one of the eggs.

Amy said the incident left her "shocked and disgusted", and added that she threw the whole carton away afterwards.

Related Story Customer finds maggots in quail egg; FairPrice working with supplier to investigate matter

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On Monday, a Sheng Siong spokesman told The Straits Times that the chain has offered Amy a refund, and was grateful that she brought the incident to its knowledge.

The spokesman said that Sheng Siong conducted a thorough check on the quail eggs on its shelves immediately after receiving Amy's feedback, and will be working with its egg supplier to look into the incident.

He added that given the fragile nature of eggs, any cracks in an egg's shell may result in an infestation.

"As we value food safety and quality, we encourage customers to reach out to us when they encounter similar incidents," he said.

On its website, the Singapore Food Agency advises consumers to look for eggs with clean shells when making their purchases, and to handle them carefully.

Consumers are also advised not to buy eggs that have cracked shells as they may be contaminated with bacteria.