CONCORD, Mass. (AP) – The estranged husband of former Massachusetts Senate President Stan Rosenberg has pleaded guilty to placing harassing phone calls to the treatment facility where he was a patient.

The Middlesex District Attorney’s office says Bryon Hefner, who faces sexual assault and other charges in a separate case, was sentenced Monday to one year of probation.

He pleaded guilty in Concord District Court to four counts of making annoying phone calls and two counts of criminal harassment.

Prosecutors say Hefner used internet-based websites to place calls to the facility in Lincoln while he was receiving mental health and substance abuse treatment in December and January.

The Boston Globe reports Hefner’s lawyer, Seth Orkand, told the court his client felt his life “spiraling out of control” at the time the calls were made.