Ahead of her visit to Nigeria today, Human Rights Watch, HRW, has urged US Secretary of State, Hillary Clinton to encourage President Goodluck Jonathan to address increasingly deadly violence in northern and central parts of the country.

In a letter to Clinton on Tuesday, HRW noted that much of the violence had been initiated by the Boko Haram sect and urged that issues like pervasive abuses, corruption and impunity should top agenda during the trip.