Bannon tried to stonewall House panel on Trump transition — until lawmakers subpoenaed him on the spot
Steve Bannon speaking at the 2017 Conservative Political Action Conference (CPAC) in National Harbor, Maryland. (Gage Skidmore/Flickr)

Steve Bannon was subpoenaed for the second time in a week during testimony before a House panel on his time working for President Donald Trump.

The former White House chief strategist was subpoenaed last week by special counsel Robert Mueller in his investigation of Trump campaign ties to Russia, and Bannon will be required to testify before a grand jury.

Bannon testified Tuesday before the House Intelligence Committee, where Fox News congressional correspondent Chad Pergram reported he was issued another subpoena.

Sources told the Fox News reporter that Bannon was told by the White House not to answer lawmakers' questions about the administration or the Trump transition, although he did not claim executive privilege.

However, lawmakers compelled Bannon's testimony on those topics by issuing him a subpoena during the closed-door session.

It's not yet clear what Bannon was asked to discuss at the hearing at a Sensitive Compartmented Information Facility, where matters related to classified or sensitive information can be discussed in a secure setting.