One McDonald's customer received a rude shock when she opened a Filet-O-Fish box from the fast food chain's Funan Mall outlet on the evening of Dec. 12.

Inside, there was a live cockroach perched on the side of her burger.

The customer, Ning, 22, told Mothership that it ruined not just her appetite, but her and her boyfriend's evening as well.

They have since reported the matter to McDonald's and the Singapore Food Agency (SFA).

Following the incident, SFA stated that it has since inspected the outlet, but did not detect any pest infestation or food safety lapses.

The incident

On that day, Ning had arranged with her boyfriend to go for a walk around Marina Bay Sands (MBS), and enjoy the Christmas lights.

He had a meal first before stopping by the Funan Mall McDonald's outlet to buy her a Filet-O-Fish meal for dinner.

Ning said that it was not her first time ordering from that particular outlet.

Neither did her boyfriend notice anything amiss with the hygiene of the outlet — he said it seemed like any other McDonald's.

After buying the takeaway meal, it was a 30-minute walk for him to get to MBS and meet Ning.