British Prime Minister Andy Burnham is reported to have exchanged messages with a person impersonating Susie Wiles, Donald Trump’s chief of staff, before he became suspicious.

According to multiple outlets citing Politico, the communications were reportedly “of no significance,” and concerns arose soon after Burnham contacted the individual. Once those doubts were raised, the matter was reportedly reported to relevant authorities. Outlets also say the British embassy became concerned and raised the case with the White House.

The reports provide limited detail on timing and content. Several outlets note it happened after Burnham entered No 10, but the exact date is unclear. Different tabloid headlines characterize it as a “gaffe” or “blunder,” while others focus on the verification process and response. A UK government spokesperson is quoted as saying it does not comment on national security matters. Some outlets also reference prior impersonation attempts involving Wiles that were reported in the US.

Overall, outlets agree the incident involved messages to a Susie Wiles impersonator and that officials responded after concerns were identified, with the exact scope of what was discussed remaining unclear.