FBI Director James Comey confirms that his agency is investigatingpossible links between the Trump campaign and Russian officials.Comey also says that he has "no information" to support claims by President Donald Trumpthat the government wiretapped his phones during the 2016 campaign.The Federal Bureau of Investigation (FBI) is the country's top criminal investigative agency.Comey was speaking Monday during a hearing of the House of Representatives Intelligence Committee.Earlier this month, Trump sent a series of tweets accusing former President Barack Obamaof ordering wiretaps of his offices at Trump Tower in New York City.Comey said the FBI and the U.S. Department of Justicehad both "carefully" investigated Trump's claim."With respect to the president's tweets about alleged wiretapping directed at him by the prior administration,I have no information that supports those tweets."He added that Department of Justice officials asked him to inform the committeethat they had also reached the same conclusion about the Trump tweets.Comey said the investigation is ongoing, the work is "complex,"and he could not say when it would be completed."But they will always do it well no matter how long that takes.I can promise you we will follow the facts wherever they lead."So far, White House and senior intelligence officialshave offered no information to back up Trump's claim of wiretapping.A spokesman for Obama has called the allegation "simply false."Speaking about the wiretapping process,Comey said no individual can order surveillance of an American.He said a court must approve wiretaps after an application process is completed.Comey officially confirmed for the first time that the FBI is investigatingpossible links between Trump campaign officials and the Russian government.He said investigators were looking into "whether there was any coordinationbetween the campaign and Russia's efforts."In keeping with FBI policy, Comey said he was not able to publicly commenton specific parts of the investigation.The House Intelligence Committee is one of several congressional panelsinvestigating possible Russian influence during the U.S. presidential election.U.S. National Security Agency Director Michael Rogersalso testified during Monday's hearing.He said he stands by an earlier conclusion of U.S. intelligence agenciesthat Russia did attempt to influence the 2016 election with the goal of electing Trump.Comey said the intelligence community conclusionhad determined that Russia "hated" Hillary Clintonand wanted to harm her chances of winning the election.He added that investigators believed Russian officialssaw the possibility early on that Trump could win the election.Later, when most opinion surveys showed Clinton had a wide lead over Trump,Russia focused all its effort on harming her campaign, Comey said.U.S. intelligence agencies concluded that Russia was responsiblefor leaking emails of U.S. people and political institutions.Thousands of emails were leaked by anti-secrecy group WikiLeaksfrom the Democratic National Committee (DNC).Private emails from a top campaign adviser to Democratic presidential candidateHillary Clinton were also leaked.The emails showed embarrassing, behind-the-scenes efforts of Democratic officialsto help Clinton win the party's nomination.The U.S. intelligence community concluded that Russian President Vladimir Putinordered the hacking into computers at the DNC.The Trump administration has denied that any campaign officialscooperated with Russian officials in that cyberattack.Before Monday's hearing started, Trump sent out a series of tweetsdenying that his campaign had cooperated with Russia."The Democrats made up and pushed the Russian story as an excuse for running a terrible campaign.Big advantage in Electoral College & lost!" he tweeted."The real story that Congress, the FBI and others should be looking intois the leaking of Classified information. Must find leaker now!" he wrote.Both Comey and Rogers addressed the issue of leaks,saying they are an important part of their work and will be fully investigated."Leaks of classified information are serious, serious federal crimes for a reason.They should be investigated and, where possible, prosecuted in a way that reflects that seriousness,so that people understand it simply cannot be tolerated."The two officials said no evidence had been found that Russian cyber attackershad changed any actual vote numbers in key states during the election.