A woman uses a piece of cardboard to fan her son, while waiting for their turn for a medical checkup, outside Jinnah Postgraduate Medical Centre (JPMC) during intense hot weather in Karachi, Pakistan, June 23, 2015. [Photo/Agencies]

In a statement, he said those hospitalized should be given best possible medical treatment.

He directed the concerned authorities to create awareness among people about the current situation of heatwave in order to avoid more deaths.

Nawaz Sharif directed the ministry of water and power to keep him updated about the latest power supply situation.

The paramilitary force "Pakistan Rangers" has established ten " Heat Stroke Relief Centers" at different locations in Karachi to provide relief to the citizens who are affected due to extreme heat wave, officials said.

The doctors, paramedical staff and complete medical facilities will be available at each center to cure heat stroke patients.

The Human Rights Commission of Pakistan has called for urgent interventions to prevent further loss of life.

"The authorities must play their part in enhancing consciousness of how to minimise the hazards of exposure to the sun while going about everyday activities," the Commission said in a statement.