LAHORE, May 14: Four activists of an outlawed group wanted by Karachi police in connection with bomb blasts and sectarian violence were arrested by Lahore police, TV and news websites said on Monday. The arrest of Wasif, Qari Faisal, Yousuf and Faizan was also confirmed by Karachi police which had sent a team to Lahore to take the custody of the accused. Each of them carried a head money of Rs300,000.