As many as 903 people have been killed, nearly 1,300 injured and thousands left homeless as heavy monsoon rains and flash floods have continued to play havoc in Pakistan since June, the National Disaster Management Authority (NDMA) said.More than 70 people died and over 82,000 houses were damaged over the past 24 hours in various rain-related incidents in parts of the country, according to the NDMA statistics.