Goa Police has arrested the second accused in connection with the murder of a Nigerian national, which had sparked protests by his fellow countrymen, who had created ruckus and blocked a national highway. Superintendent of Police (North) Priyanka Kashyap confirmed that accused Praveen Manohar Mandrekar was arrested last evening from Assagao village for murdering Obodo Uzoma Simeon, a Nigerian national on October 30.