Via Stripes:

RAF MILDENHALL, England — British police have arrested three people in connection with a possible terrorist plot that may have involved U.S. Air Force facilities, a local newspaper reported.

Two men were arrested on July 14 at different addresses in the area of Luton, Bedfordshire, and a third was apprehended in Letchworth, Hertfordshire, the London Metropolitan Police said in a statement.

The Eastern Daily Press, a local newspaper, reported that the arrests were connected to a possible attack on a U.S. Air Force base about July 4. U.S. officials canceled July 4 festivities because of changes to the local threat assessment. On Monday, a spokeswoman for RAF Lakenheath confirmed to Stars and Stripes the report was accurate.

“The arrests … are part of an ongoing investigation into Islamist-related terrorism,” the police said.

Westminster Magistrates’ Court in London gave permission to police last week to hold the three suspects for an additional seven days.