From the BBC story:

Rep Nancy Mace, a North Carolina Republican, tried to get Grusch to elaborate on what he knew about non-terrestrial bodies.

She asks him if "biologics" were recovered from any crashed crafts.

Referencing his previous media interviews, Grusch responds that "biologics came with some of these recoveries".

Were they human or non-human? Mace asks.

"Non-human, and that was the assessment of people with direct knowledge on the programme I talked to," Grusch responds.ike this."