Three coaches and the engine derailed, while two were overturned.
Israeli officials argue that Lebanon is not covered by the ceasefire agreement.
American President Donald Trump has agreed to suspend bombing Iran for two weeks.
The prime minister’s office announced this on Thursday.
Mr Sharif also thanked the U.S. and other friendly countries for their role in securing the ceasefire.
The spokesman added that flight operations at Islamabad and Lahore airports have been suspended until further notice.
India launched missile strikes from the air and surface on several areas of Pakistan and Pakistani-controlled parts of the disputed Kashmir region.
Mr Sharif reiterated the government’s determination to continue the fight against terrorism until the threat is completely eliminated.
Pakistani Prime Minister Shehbaz Sharif on Tuesday vowed retaliation a day after deadly terrorist attacks killed more than 60 people.
This is the highest number of out-of-school children in any country.
