Pakistan blocked the head of an airline, whose plane crashed near the capital, from leaving the country as it began an investigation into the disaster

All 127 people on board a Boeing 737 that crashed near Islamabad in bad weather are dead, hospital and civil aviation officials said on Saturday.

Investigators on Friday on searched for the crucial black box after Pakistan’s worst aviation disaster.

Pakistan on Thursday observed a day of mourning for the 152 people killed in the country’s worst aviation disaster.