Police officers arrested for allegedly seeking roadside bribe from Nigeria's anti-corruption boss

Four Nigerian policeman, accused of setting up an illegal checkpoint to extort money from drivers, picked on the wrong man: the head of one of the country's anti-corruption agencies.Musa Aliyu, who leads the Independent Corrupt Practices and Other Related Offences Commission, has alleged that he was stopped while driving in the capital , Abuja, on Saturday, and forced to withdraw 53,000 naira (£45, $38) from a cash machine.Police Commissioner Ahmed Sanusi accused the men of abandoning their official posts to set up the unauthorised roadblock.They now face a police disciplinary procedure that could result in their sacking. It is rare that these kinds of cases end up in court.Aliyu's report of the incident to the police prompted what the commissioner described as an "intelligence-driven operation". That led to the arrest of the alleged ringleader and subsequently the other suspects.In an interview with BBC Hausa, Aliyu explained what happened after he was flagged down on a busy road."When I stopped, a policeman came to my car door. I wound down the window, and he told me to open my car, so I did."The policeman then got in.