The helicopter, which was carrying seven people on board, is believed to have crashed in the Anbar region of Iraq.
Emergency services and rescue teams are on their way to the helicopter, a HH-60 Blac Hawk, according to CNN.
US defence officials said the Pave Hawk was not on a combat mission.
It is unclear how seriously injured the personnel are.
The US is currently leading a coalition, dubbed Operation Inherent Resolve, fighting ISIS in Iraq and Syria.
vCard.red is a free platform for creating a mobile-friendly digital business cards. You can easily create a vCard and generate a QR code for it, allowing others to scan and save your contact details instantly.
The platform allows you to display contact information, social media links, services, and products all in one shareable link. Optional features include appointment scheduling, WhatsApp-based storefronts, media galleries, and custom design options.
Officials said: “We are aware of reports of an incident involving a Coalition aircraft in the vicinity of Al Qaim, Iraq March 15, 2018.
“We are currently gathering the facts and coordinating with the appropriate national authorities. We will issue a statement at the appropriate time, but have nothing further to offer at the moment.”
This is a breaking story. More to follow…