Robert J Costello, scheduled to appear before New York grand jury on Monday, likely to question Trump accuser’s credibility

Former President Donald Trump welcomed reports that lawyer Robert Costello is expected to testify before the Manhattan grand jury investigating an alleged hush money payment made to adult film star Stormy Daniels.

Attorney Robert Costello, once a legal adviser to Trump attorney Michael Cohen, will appear Monday before the New York grand jury investigating the former President Donald Trump's alleged role in a scheme to pay hush money to adult film star Stormy Daniels.

Michael Cohen, the ex-lawyer and fixer for former President Donald Trump, confirmed that he will be available as a rebuttal witness for Manhattan prosecutors on Monday.

Attorney Robert Costello, a former legal adviser for Michael Cohen, is planning to testify at the request of former President Donald Trump’s lawyers before the grand jury in New York, a source with direct knowledge told NBC News.

A lawyer called to testify behind closed doors in New York may challenge the claims of a key witness before a grand jury decides whether to charge Donald Trump over hush money paid to a porn star.

The investigation into former President Donald Trump's alleged role in a scheme to pay hush money to adult film star Stormy Daniels is set to move further into view on Monday, with former Trump attorney Michael Cohen saying he's been asked to report to the Manhattan District Attorney's Office and Cohen's one-time legal adviser Robert Costello set to appear before the grand jury.