LEROY TOWNSHIP - A rig worker was listed in stable condition at Robert Packer Hospital in Sayre late Monday afternoon after he was injured earlier in the day at a Chesapeake Energy Corp. gas well site in LeRoy Township, according to a press release from Chesapeake Energy.

The injured worker was flown by emergency medical helicopter to Robert Packer Hospital from a landing zone set up next to the site, authorities said.

The injury occurred "during drilling operations" at the site, according to the press release, which was issued by Brian Grove, director of corporate development for Chesapeake Energy.

No further information was available from Chesapeake Energy Monday evening on how the injury occurred.

The worker's injuries are "not life threatening," the press release said.

"An investigation into the cause of the accident is ongoing, and no further information is available at this time," the press release said.

Rory Sweeney, a media relations coordinator for Chesapeake Energy, said that Chesapeake Energy was investigating how the accident occurred, and he said he assumed that other agencies are also investigating the incident. However, he said he said he was not certain which agencies are involved in the investigation.

When the injury occurred, "all applicable emergency protocols were initiated," the press release said.

The injured worker is employed by Nomac Drilling, which is a subsidiary of Chesapeake Energy Corp., Sweeney said.

The worker was injured at the Morse well site, which is located on Southside Road, near its intersection with Curtis Wright Road, said Kim Jennings, chief of the Canton Volunteer Fire Company.

Sweeney, citing medical statutes, said he would not be able to release the worker's name.

The incident was reported to Bradford County's 911 center shortly before 2 p.m., authorities said.

James Loewenstein can be reached at (570) 265-1633; or email: jloewenstein@thedailyreview.com.