WASHINGTON -- Boston's police commissioner says government should tighten security around celebratory public events and consider using more undercover officers and technology, including surveillance cameras - but only in ways that don't run afoul of civil liberties.
That's what he's telling lawmakers holding the first congressional hearing Thursday on the Boston Marathon bombings.
Commissioner Edward Davis says he doesn't endorse actions that would move the nation into a "police state mentality, with surveillance cameras attached to every light pole in the city."
Investigators used surveillance video from a restaurant near one of the Boston explosions to help identify two bombing suspects. One died in a police shootout and the other is now in police custody.
The Associated Press obtained a copy of Davis' remarks prepared for the House Homeland Security Committee.
By ALICIA A. CALDWELL
The Associated Press