Democratic U.S. Senate hopefuls Edward Markey and Stephen Lynch clashed in their first debate since the Boston Marathon attacks.

    Lynch faulted Markey with not doing enough on security issues, including not voting for the Joint Terrorism Task Force which combines the resources of federal, state, and local law enforcement agencies.

    Markey pointed to several measures he supported to enhance security including the screening of air cargo for bombs and the screening of tankers coming into U.S. ports for nuclear materials.

    Both candidates agreed the surviving suspect in the Marathon bombings should be tried in federal courts and not be labeled an enemy combatant.

    Both also lamented the U.S. Senate's recent vote to reject gun control measures and said they'd push for tougher measures if the bill reaches the House.

    The Monday night debate took place at WBZ-TV. (Associated Press0