The Department of Homeland Security plans to announce an increase in security on international flights by U.S. carriers after the suspected bombing of a Russian plane flying over Egypt on Oct. 31.

The action will be unveiled as soon as Friday, according to a person familiar with the plan who wasn’t authorized to discuss the matter. The person declined to specify what steps will be taken.

White House Press Secretary Josh Earnest said on Thursday an “ongoing process” was under way at DHS to review “a number of different steps we can take to enhance security for commercial flights bound for the United States from certain foreign airports.”

U.S. intelligence officials increasingly suspect that a Metrojet Airbus A321 that broke apart over the Sinai peninsula was taken down by a bomb.

This article was written by Alan Levin from Bloomberg and was legally licensed through the NewsCred publisher network.

Photo Credit: In this Russian Emergency Situations Ministry photo, made available on Monday, Nov. 2, 2015 Egyptian soldiers collect personal belongings of plane crash victims at the crash site of a passenger plane bound for St. Petersburg in Russia that crashed in Hassana, Egypt's Sinai Peninsula, on Monday, Nov. 2, 2015. A Russian cargo plane on Monday brought the first bodies of Russian victims home to St. Petersburg, from Egypt. Russian Ministry for Emergency Situations / Via AP