Yakima County Sheriff's Deputies have arrested a fourth suspect in connection with the May attack of real estate broker 78-year-old Vern Holbrook.

Deputies on Tuesday took into custody 38-year-old Jill Taylor who is the former daughter-in-law of Holbrook and girlfriend of another suspect, 28-year-old Daniel Blizzard.

Authorities say Blizzard hired two men in a plot to have Holbrook killed after a failed attempt to purchase Holbrook's business Aspen Real Estate.

Authorities tied Taylor to the attempted murder through numerous interviews and cell phone records obtained by investigators.

Holbrook is still recovering from his injuries.