A BRITISH MINISTER has called for members of the public to be cautious after a terror threat was allegedly made against Heathrow Airport.

Non-governmental counterterrorism organisation Site Intelligence Group has warned of a threat being made by a “pro-Islamic State Twitter account” against planes flying from Heathrow to the US this weekend.

The warning reportedly said there will be “a device placed in either Heathrow, LAX or JFK” airport.

Extra people are expected to pass through American airports this weekend as Monday, 4 July, marks Independence Day in the US.

Transport minister Lord Tariq Ahmad has called for the British public to be cautious, but said all necessary steps are being taken to ensure people’s safety.

The Guardian quotes him as saying: “We all need to be vigilant to the global threat of terrorism – in the UK we keep all aspects of aviation security under constant review and work closely with our international partners to mitigate risks.

We will continue to take all steps necessary to keep the public safe, but for security reasons we do not comment in detail on specific measures or operational matters.

Read: Election count underway in Australia with top parties neck and neck

Read: Mother questioned after four children are stabbed to death in Memphis