House Intelligence Committee Republicans and other GOP lawmakers on Wednesday stepped up their demands for the Justice Department and FBI to turn over more information about their investigative decisions and tactics during the 2016 presidential election.

The lawmakers said they aren't satisfied by a plan to let only certain House and Senate leaders review some of that material Thursday. Rep. Michael Conaway of Texas said he and other GOP members of the intelligence panel signed two letters on Wednesday underscoring their contention that all committee members should get a look.

The material Conaway and the others want to see is related to an alleged FBI informant who explored ties between members of President Donald Trump's 2016 campaign and Russians. One of the letters was sent to Deputy Attorney General Rod Rosenstein, but Conaway refused to say who the second letter was addressed to.