A contractor for a Michigan utility company died Wednesday after being electrocuted during what was apparently a routine pole change procedure.

News sources say the 46-year-old man, a DTE Energy contractor who worked for Asplundh Construction Company, was killed at about 11 a.m. Wednesday in Monroe, Michigan.

CPR unsuccessful

Witnesses say his co-workers immediately gave him CPR and summoned emergency responders. Firefighters who arrived at the scene also attempted to resuscitate the man, but were unable to.

Residents near the site reported hearing a loud pop and losing power at the time if the incident.

Investigations underway

DTE Energy issued the following statement:

"We were saddened to learn of a tragic accident Wednesday morning involving a lineworker employed by Asplundh Construction Company, which was performing work for DTE Energy in Romulus. The safety of our employees - including our supplier family - is our No. 1 priority at all times. We are working with local authorities to investigate the cause of the accident."

Asplundh Construction, a Pennsylvania-based tree service company, also released a statement saying that the company is working with authorities to determine the cause of the accident.

The Michigan Occupational Safety and Health is investigating the fatality.