Security will be tightened at airports, rail stations and ports in the U.S. in response to the deadly bombings in Brussels, according to a government official briefed on the plan.

The U.S. Department of Homeland Security will make an announcement later Tuesday, said the official, who spoke on the condition of anonymity because he was not authorized to disclose the plans.

The stepped up security includes assigning additional law enforcement personnel to the facilities, the official said.

Earlier Tuesday, DHS issued a statement saying it was monitoring the situation in Brussels and would take additional security measures if they are needed.

DHS, which oversees agencies including the Transportation Security Administration that handle domestic anti-terrorism activities, is coordinating with its European counterparts, the agency said. Citizens are also encouraged to report any activity they think is suspicious.

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

Photo Credit: Security at Los Angeles International Airport after an attack there in 2013. Following bombings in Brussels, Belgium the U.S. Department of Homeland Security has promised heightened presence at borders. Ringo H.W. Chiu / Associated Press