No bomb found after plane searched at Denver No bomb found after plane searched at Denver - Travel News Travel News DENVER - The Federal Bureau of Investigation is trying to determine who phoned in a bomb threat involving a United Airlines plane in Denver bound for San Francisco. The Transportation Security Administration says the plane was swept and nothing suspicious was found. TSA spokeswoman Carrie Harmon says someone phoned in a bomb threat at about 7:30 a.m. Thursday. She says passengers had not begun boarding and the plane was towed to a remote location. Harmon says the passengers boarded another plane for the flight to San Francisco. Airport spokeswoman Jenny Schiavone says no concourses were evacuated and airport operations have returned to normal. More from Travel News Facing costly fuel, US airlines push fares higher Stricken liner being towed through pirate zone FAA wants to boost airline pilot qualifications Frankfurt airport strike continues; 140 flights cut Oxygen tanks blamed for bomb scare at S.F. terminal Search msnbc.com 1 Top stories 2 Business 4 U.S. news 5 World news 6 Politics 7 Tech & science 8 Entertainment 9 Health Travel Nightly News Dateline Meet the Press Rachel Maddow See news breaking? Podcasts Local news News alerts 0 MSN home Top # Bottom Switch to regular msnbc.com site MSN Privacy / Legal © 2012 msnbc.com