Top British detectives are questioning an unlikely suspect in a high-stakes child abuse investigation: their boss. Metropolitan Police Chief Sir Bernard Hogan-Howe is getting grilled by his own detectives over an alleged police cover-up connected to former Prime Minister Tony Blair's administration. Hogan-Howe was an Assistant Chief Constable for the Merseyside Police in 1998, when the department uncovered claims that one of Blair's ministers was a suspected pedophile. Hogan-Howe now says he does not recall details about the investigation" or any suspects, according to a statement from the Metropolitan Police Service. But a source close to the investigation [said] it is "inconceivable" that Hogan-Howe and his cohorts weren't aware of the accusations. "The senior investigating officer at the time would have been expected to have reported to his senior officers the fact a serving government minister had come under suspicion," the source said. Even as he is apparently being questioned within his own department, the MPS said in a statement that Hogan-Howe "absolutely refutes any suggestion he would have stopped or inhibited a criminal investigation of the nature suggested, including politicians. It would be wrong to suggest otherwise." MPS opened an investigation into the cover-up claims just two years ago. The minister was one of several men suspected of sexually abusing children at a Brixton home in the early '80s.