Federal investigators are examining records of communications between members of Congress and the pro-Trump mob that attacked the US Capitol, as the investigation moves closer to exploring whether lawmakers wittingly or unwittingly helped the insurrectionists, according to a US official briefed on the matter.

The data gathered so far includes indications of contact with lawmakers in the days around January 6, as well as communications between alleged rioters discussing their associations with members of Congress, the official said.

The existence of such communications doesn’t necessarily indicate wrongdoing by lawmakers and investigators aren’t yet targeting members of Congress in the investigation, the official noted. Should investigators find probable cause that lawmakers or their staffs possibly aided the insurrectionists, they could seek warrants to obtain the content of the communications. There’s no indication they’ve taken such a step at this point.