KARACHI: The Chehlum of Hazrat Imam Hussain (RA) and his companions martyred in Karbala tragedy is being observed Tuesday (today) with traditional religious solemnity, amid tight security measures countrywide.

The main mourning procession of Chehlum in Karachi will be taken out from Nishtar Park, which will end at Hussainia Iranian Imambargah in Kharadar after marching its traditional route.