Eight freight containers got detached in the Daharki area of Ghotki district in Sindh, reported 24NewsHD TV channel on Monday.
According to the Railways administration, the train was carrying 15 containers to Lahore from Karachi when the incident occurred, disrupting the railways' schedule.
The department said efforts to reconnect the containers to the train are underway and the track is expected to be fully operational soon.
Moreover, the railway administration said the trains were already delayed due to fog, further complicating the situation.
Reporter: Jahangir Alam