She devoted her career to helping police families. Now she’s a suspect after her officer husband’s death.

Federal agencies have joined the third day of a search for Karen Solomon, a longtime police mental health advocate whose husband was found dead.

Federal law enforcement agencies have joined in the search for a Massachusetts woman known for her work raising awareness about suicide among police officers and who is now a suspect in the death of her police officer husband.

Thursday marked the third day of a hunt for Karen Solomon after Worcester police responded to the couple’s Wildwood Avenue home at about 5:28 a.m. Tuesday for a report of a person down and found her husband, off-duty Worcester police officer Kurt Solomon, dead.

For years, Karen Solomon has been an influential advocate for the mental health of police officers and their families. She co-founded First H.E.L.P., an organization focused on suicide prevention and mental health among first responders, and wrote two books about the toll police work can take on officers.

Worcester Police Department officer Kurt Solomon.Worcester Police DepartmentHer advocacy also brought her before a federal law enforcement commission. In 2020, Solomon participated at a Justice Department hearing of the President’s Commission on Law Enforcement and the Administration of Justice, where she testified on a panel devoted to support for officers and their families.

First H.E.L.P. acknowledged the death Tuesday, saying its “first concern is for the officer who lost his life, his family, his colleagues, and the Worcester law-enforcement community.”