Update: Press conference by Massachusetts Gov. Patrick and Boston Mayor Menino

Massachusetts Governor Deval Patrick and Boston Mayor Tom Menino held a joint press conference with the FBI to announce continued security measures and to declare that "Boston will overcome" this disaster.

Only two improvised explosive devices or IEDs, both of which exploded, were discovered yesterday at the scene of the Boston Marathon, Massachusetts Gov. Deval Patrick said Tuesday. “There were no unexploded bombs,” he told a press briefing. State and local officials warned Bostonians that an investigation into the bombing of its prized marathon on Monday will continue to affect every day life.

“Everyone should expect a continued, heightened police presence,” Mr. Patrick added during the news conference Tuesday morning. Yet Mayor Thomas Menino and others tried to set a positive tone for the city as it moves forward, praising first responders, neighbors and runners who offered a helping hand in the wake of the blasts.“This is a bad day for Boston, but I think if we pull together we’ll get through it,” said Mr. Menino, seated in a wheelchair as he recovers from the leg surgery over the weekend.