Kirkman says Loring was arrested on suspicion of stalking and violating a court order. Jail records show he is being held on $150,000 bail.
Patridge obtained a three-year restraining order against Loring in September. She testified at the time that she was afraid after the 24-year-old repeatedly came to her house and gave her disturbing drawings.
The arrest was first reported by celebrity Web site TMZ.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: Stars Of 'The Hills'… Past & Present
PLAY IT NOW: Access Extended: Rumer Willis & Audrina Patridge's 'Sorority Row' Premiere
PLAY IT NOW: Audrina Patridge Reacts To Stephanie Pratt's Bulimia & Spencer's Apology