here's abc's aaron kutursky. >> all right, this is number 15, raymond clark. >> reporter: once a high school athlete raymond clark iii now an accused murderer being held on $3 million bond. >> it's obviously a very serious case. >> reporter: he appeared in court after police arrested him at a connecticut motel. >> very peaceful. as far as that goes -- he was cooperative. >> reporter: police had followed clark's every move in the days after annie le's strangling death. they moved in after comparing his dna to bloody surgical gloves and other items found at the lab where he and le both worked. >> we don't have any other suspects at this time. we have a lot of evidence. we still have to analyze it. literally hundreds of pieces of evidence to go to the lab. >> reporter: on the yale campus the arrest comes as a relief. >> i think it does in a sense but it will still be a long time coming before we all feel like we're completely safe. >> reporter: clark worked at the yale lab since december, 2004 and has no prior criminal record. the university says there's nothing in his background that wo

aaron kutursky, abc news, new haven, connecticut. >>> the fbi is warning police departments across the country to be on the lookout for terrorist activity. the warning comes after a raid yesterday on three new york city apartments looking for men allegedly connected to al-qaeda. investigators targeted a group of afghan men living in new york and denver. they say the denver men recently traveled to pakistan and came back with bomb-making documents. >> there is very good reason to believe that there's a connection to al-qaeda or to al-qaeda supporters. yes, this does not appear to be self-starters. >> no one was arrested in the raid and no explosives were found but the fbi did take several documents, computers and cell phones. a number of people were taken into custody following the raids but have since been released. >>> when a patient goes into cardiac arrest nurses and doctors spring into action. who has a higher survival rate when it comes to these kinds of emergencies? and does race play a part? >>> plus, some rental car companies are snuffing out smoking in their vehicles. how much