Police: Suspect shot dead, second at large

US President Barack Obama told the people of Boston earlierThursday that the bombing at the city's iconic marathon would notbeat them and vowed "we will finish the race." "Even when our heart aches, we summon the strength that maybe wedidn't even know we had, and we carry on; we finish the race," hesaid at an interfaith memorial service at the city's Cathedral of theHoly Cross.

Images of two young men dressed in dark clothes and wearingbaseball caps show them carrying backpacks that could have containedthe bombs. The FBI made the announcement to seek help from the publicin identifying the men.

One of the men could be seen leaving a backpack at the site of oneof the two blasts, chief investigator Richard DesLauriers said in apress conference.

The men were considered "armed and extremely dangerous,"DesLauriers said, warning anyone with information to call the policeand "not take any action on your own." "Somebody out there knows these individuals as friends,neighbours, co-workers or family members of the suspects," he said."Though it may be difficult, the nation is counting on those withinformation to come forward and provide it to us." The FBI did not specify what ethnicity the men might be, but theyappeared to have light skin and dark hair. It was collecting tips atthe phone number 1-800-CALL-FBI or online atbostonmarthontips.fbi.gov.

The photos are posted at the FBI website. Dozens of victimsexperienced injuries so serious that their legs had to be amputated,including a 6-year-old girl whose 8-year-old brother was killed.

Secretary of Homeland Security Janet Napolitano had warned earlierthat it would take time to solve the crime.

"The investigation is proceeding apace," she said, but noted itwould not be as easy to solve as a television crime drama. "This isnot an NCIS episode." Obama recalled the history of the city in the founding of the USand his own years as a law student at nearby Harvard University,describing the attack as "personal." "Your resolve is the greatest rebuke to whoever committed thisheinous act," Obama said. "If they sought to intimidate us, toterrorize us, to shake us ... it should be pretty clear by now thatthey picked the wrong city to do it." Speaking directly to hospitalized victims from a memorial service,Obama vowed, "We will all be with you as you learn to stand and walkand even run again." "I have no doubt you will run again. You will run again." He promised justice for the still unknown perpetrators of theattack that killed three and wounded 176 when two bombs exploded atthe race's finish line on Monday.

"Yes, we will find you and you will face justice," Obama pledged.

He met prior to the service with the family of Krystle Campbell,one of the three killed in the attack. Obama and First Lady MichelleObama visited victims in several hospitals after the service.

Obama has been continually briefed on the investigation into thetwo bombs at Monday's race, the White House said.

The service brought together Christian, Jewish and Muslim faithleaders, who offered words of comfort from their scriptures.

"Bless this broken city as she finds her balance, dusts herselfoff and tilts her head back to the sky," prayed the Reverend LizWalker of Roxbury Presbyterian Church.

Catholic Cardinal Sean O'Malley vowed, "love is stronger thandeath." Political officials, including former Massachusetts governor andpresidential candidate Mitt Romney, were among the thousands packedinto the cathedral, along with first responders and families of thevictims.

Boston Mayor Thomas Menino praised his city Thursday for itsresilience.

"We are one Boston. No adversity, no challenge - nothing can teardown the resilience in the heart of the city and its people," hesaid.

He pointed to brave actions by emergency workers and ordinarycitizens who helped the injured and the outpouring of love in thedays since Monday's bombings at the Boston Marathon.

"This was the compassion of the city at work," he said.dpa aw lns sdl aw prAuthor: Anne Walters 182203 GMT Apr 13