Bothroyd has given the former Sunderland and West Ham man his support and is confident that his 26-year-old team-mate will not be affected by the investigation in the coming weeks.
"He hasn't let it affect him and I don't see why it would,' Bothroyd said following QPR's defeat in north London.
"That happened last week. The FA questioned him, he said his piece, that's done now.
"He came out today with a clear mind and was very focused on his job. That showed today and he put in a very good performance."