WASHINGTON — The Trump administration has instituted a media blackout at the Environmental Protection Agency and barred staff from awarding any new contracts or grants, part of a broader communications clampdown within the executive branch.

Emails sent to EPA staff since President Donald Trump's inauguration Friday and reviewed by The Associated Press detailed specific prohibitions banning press releases, blog updates or posts to the agency's social media accounts.

The Trump administration has also ordered what it called a temporary suspension of all new business activities at the department, including issuing task orders or work assignments to EPA contractors. The orders were expected to have a significant and immediate impact on EPA activities nationwide.

Similar orders barring external communications have been issued in recent days by the Trump administration at other federal agencies, including the Agriculture and Interior departments.

Staffers in EPA's public affairs office are instructed to forward all inquiries from reporters to the Office of Administration and Resources Management.

“Incoming media requests will be carefully screened,” one directive said. “Only send out critical messages, as messages can be shared broadly and end up in the press.”

A review of EPA websites and social media accounts, which typically include numerous new posts each day, showed no new activity since Friday.

White House spokesman Sean Spicer said Tuesday he had no information on the blackout.

Doug Ericksen, the communications director for Trump's transition team at EPA, said he expects the communications ban to be lifted by the end of this week.

“We're just trying to get a handle on everything and make sure what goes out reflects the priorities of the new administration,” Ericksen said.

Beyond what was stated in the internal email, Ericksen clarified that the freeze on EPA contracts and grants won't apply to pollution cleanup efforts or infrastructure construction activities.

Officials at state and local agencies that rely on EPA for funding said they were left in the dark, saying they had received no information from EPA about the freeze.

Liz Perera, climate policy director for the Sierra Club, said Trump's move to freeze all EPA communications and contracts should be “a major red flag for all Americans.”