Reports from Kano said a convoy of the Emir of Kano ,Alhaji Ado Bayero was attacked today in the city.
At least four people were believed to have been killed.But a correspondent said it was too early to determine the exact casualty figure because some of the seriously injured victims were rushed to a hospital.
The attack occurred while the convoy was on its way back after a Quranic graduation ceremony which had been held at Massallacin Murtala.
Initial reports said the emir escaped unhurt but two of his sons were injured.