The Department of Justice is looking into whether Medtronic’s acquisitions led to suppressed ventilator competition in the market, reports the Star Tribune

The U.S. Justice Department is investigating if acquisitions by medical device maker Medtronic hindered competition in ventilator manufacturing, the Wall Street Journal reported on Wednesday, citing people familiar with the matter.

Medtronic has received a civil subpoena from the department requesting more information, according to the report.

Read more in the Star Tribune.