NEW YORK (AP) — Chesapeake Energy Corp. says the federal government is investigating whether there were antitrust violations relating to its purchase of some oil and gas land in Michigan.

The stock lost 3 percent in morning trading Friday.

The Oklahoma City-based company said in a regulatory filing on Thursday that it was subpoenaed by the U.S. Department of Justice to hand over paperwork related to those purchases. Chesapeake says it has also received demands for documents and information from state government agencies.

OKLAHOMA CITY (AP) — A federal judge will decide a motion filed by a group of Chesapeake Energy Corp. shareholders who want to delay the company's annual shareholders' meeting.

U.S. District Judge Vicki Miles-LaGrange is scheduled to hear oral arguments on the request Tuesday. Chesapeake's shareholder's meeting is set for Friday.