George Zimmerman ordered a bulletproof vest and an infrared home security device last year while he was out on bond awaiting his murder trial in the fatal shooting of unarmed black teenager Trayvon Martin, according to records released Thursday.

Zimmerman, a neighborhood watchman, was acquitted of any crime last month for killing 17-year-old Martin last year in Sanford, Florida. The case set off racial tensions in the U.S.

The records logged by Seminole County police monitoring Zimmerman during his release show that he checked in with deputies by telephone every two days and that he and his wife, Shellie, moved at least three times last year.

Under the terms of his release on $1 million bond, Zimmerman was required to stay in Seminole County except to visit his attorneys in a neighboring county. He also was required to wear a GPS device, which was monitored by deputies.

Deputies were notified about the bulletproof vest and home security device from a sales representative from a police supply business. When asked about them, Zimmerman said he had ordered the items for his protection.

Zimmerman's visit to a sporting goods store also piqued deputies' interest last August. They reviewed the store's security tape to make sure Zimmerman hadn't stepped foot in an area where the store sells firearms.