Investigation grows, Obama calls blasts "terror" attack

Authorities searched the home of a Saudi man injured in the Boston Marathon bombings while airports throughout the U.S. were on high alert in the wake of the deadly attack. Deborah Gembara reports.

Authorities search a Boston area apartment overnight , the home of a 20-year-old Saudi man who was injured in the blast. Police say the man, who is in the U.S. on a student- visa is not a suspect.

The hunt for answers continues. This amateur video captured the second blast of the attack that killed three people and injured at least 176. Included in the dead ... this eight year boy, Martin Richard.

A day later, security at Boston's Logan airport is high. Two passengers and were removed from one outbound flight while another plane was inspected on the tarmac because of concerns about a suspicious bag, which was later deemed harmless. Similar caution at New York's Laguardia airport after a suspicious package near one of the entrances prompted authorities to clear the a