Newsday cited prison records that state that when he first arrived at jail, Clark was "forced to wear a bulky anti-suicide smock upon intake to being strip-searched multiple times in a single day."
But in recent weeks Clark has been assigned a cellmate and is allowed to go outside for recreation time with other inmates.
In December, an 80-page arrest warrant was released, detailing how the New Haven police found a blood-like substance of the floor of Clark's Middletown, Conn., home. It later tested positive for a presence of blood, but the warrant did not specify whether it matched the DNA of Clark or Le.
Also among the more than 700 items of evidence police obtained while searching Clark's belongings were three cellphones, including an iPhone, a Blackberry and a pink Motorola phone. The ownership of these items was not made clear in the affidavit.
Several pairs of scrub pants, a fishing tackle kit equipped with a fishing line and tackle, as well as white sneakers with unknown "reddish stains" were also found in Clark's car.
Video surveillance from Sept. 8, the day Le is believed to have been murdered, show Clark wearing white sneakers.
Hairs and fibers were also found in Clark's car, according to the warrant.
ABC News' Don Ennis contributed to this report