"It's fair to say we still have an interest in him but we are not a point where we can say he is a suspect. He never was a prime suspect,"Arizona Department of Public Safety spokesman Bart Graves said in a news briefing Friday morning.
Graves said DPS still wants to keep him on their radar.
“We continue to investigate this (freeway shootings) case diligently and around the clock," Graves said. "The detectives are taking a lot of time trying to add up various factors in evidence, we will not be releasing evidence to the media because it could jeopardize the investigation and arrests," Graves added.
Without elaborating, Graves ended his news briefing by saying, "since a week ago today, we've made headway."