the all clear to leave the air flight that had been stranded on the tarmac. a second threat was made against a pacific flight where nothing was found. nbc news correspondent miguel alma gatheral almaguer explain the latest on the investigation and what the source they feel these calls are. these calls have been telephone threats unlike some that have come here to l.a.x. in the past via twitter. that eva flight was held on the tarmac for about four hours as it took time for passengers to be screened as well as their luggage. authorities say as of right now they are not connecting all these calls that have come in that have been threatening airlines and the passengers aboard those planes. they say it s still very early in their investigation. they ve made no connection yet to all of the flights and threats that have been threatened, thomas. so meanwhile, the penalty for making hoax threats like this, miguel, can be up to eight years behind bars. as you point out, the totality of all
through telephone calls and not through social media has been done before. reporter: correct. airport officials and the fbi, too, say they don t want to give out too much information about their investigation right now. they do say it is ongoing. they are looking into a series of calls that were made here over the last 24 hours as well as several that were made over the holiday weekend. the fbi says this is very serious business. every threat that is made whether over social media or land line or phone line is seriously investigated. they are still looking for more information as of this hour thomas. nbc s miguel almamaguer, thanks. the irs reported 100,000 people had their private information stolen by hackers. they snatched years worth of old tax returns. authorities say criminals could