On Wednesday, the cash-strapped Pakistan International Airlines (PIA) had to cancel a total of 24 domestic and international flights due to a limited supply of fuel by Pakistan State Oil (PSO). According to official sources, on Wednesday, PIA paid Rs150 million to PSO for fuelling these 26 flights. On Tuesday, PSO had provided fuel for only 13 PIA flights, including 10 international and 3 domestic routes, upon payment of Rs125 million. Read also: Financial crisis takes a toll on PIA passengersA senior official at PSO said the state-owned fuel supplier was "providing fuel only for flights that PIA has prioritized." This week, PIA agreed to pay the oil firm Rs100 million every day to cover its dues, the PSO official said.