LONDON – A British Muslim family heading for Disneyland was blocked from boarding a flight to Los Angeles by US authorities at London’s Gatwick airport amid concerns of an American overreaction to the perceived terrorist threat.

US Department of Homeland Security officials provided no explanation for why the country refused to allow the family of 11 to board the plane even though they had been granted travel authorization online ahead of their planned 15 December flight.

Affiliates to Prime Minister David Cameron have said that the case will be examined .

The incident comes on the heels of the the recent terror attacks in Paris and the mass shooting in San Bernardino, California.

Comments by the Republican presidential frontrunner Donald Trump calling for a ban on all Muslims entering the US have also contributed to the tense atmosphere.

The case of the family from London who were turned back at the airport has been raised by the British Labour MP Stella Creasy, who believes a lack of information from US authorities is fuelling resentment within British Muslim communities.

US Homeland Security officials did not respond to a request for comment on why the family had been stopped from entering the country.

The family planned to visit cousins in southern California and go to Disneyland and Universal Studios, but they were turned away by US officials while at the departure lounge.

Mohammad Tariq Mahmood was one of the family members turned away from the flight. He was travelling with his brother and nine of their children. Mahmood told the Guardian that no officials had told them why their entry was barred, but he thinks the reason is “obvious”.

He noted that the children had been counting down the days to the trip for months, and were devastated not to be able to visit their cousins as planned.