Homeless Pakistani youngsters sleep on the push-carts along roadside on the early morning on Wednesday, July 8, 2015 in Karachi, Pakistan. (Photo by Fareed Khan/AP Photo)

People cool themselves off in a water during a hot weather in Karachi, Pakistan, Wednesday, July 1, 2015. More than 1,200 people lost their lives due to a weeklong heat wave in the southern port city of Karachi, suffering from heatstroke and dehydration. (Photo by Fareed Khan/AP Photo)

Pakistani Muslims wait for the sunset to break their fast during the holy fasting month of Ramadan in Islamabad, Pakistan, Monday, July 13, 2015. (Photo by B. K. Bangash/AP Photo)

A three-wheeled tuk-tuk moves past homeless people sleeping in the middle of a road early on the morning on Wednesday, July 8, 2015 in Karachi, Pakistan. (Photo by Fareed Khan/AP Photo)

A Pakistani boy looks a mural of a three-wheeled tuk-tuk that is painted on the wall of a school in Rawalpindi, Pakistan, Monday, July 6, 2015. Writing in Urdu reads, “when I grow up, I will become a truck”. (Photo by Anjum Naveed/AP Photo)

A man inflates plastic balloons of various shapes while selling them along a median strip in Karachi, Pakistan, June 25, 2015. (Photo by Akhtar Soomro/Reuters)

A girl smiles while holding water bottles she collected from a charity distribution point during a heatwave, outside the emergency department of Jinnah Postgraduate Medical Centre (JPMC) in Karachi, Pakistan, June 28, 2015. Sea breezes brought lower temperatures on Friday to ease a heat wave that killed more than 1,150 people around Pakistan's teeming port city of Karachi during the Muslim fasting month of Ramadan. (Photo by Akhtar Soomro/Reuters)

Men sleep on the floor during a heat wave, at a mosque at the premises of Jinnah Postgraduate Medical Centre (JPMC) in Karachi, Pakistan, June 28, 2015. (Photo by Akhtar Soomro/Reuters)

A Sikh pilgrim (C) prays with others inside the compound of Maharaja Ranjit Singh's mausoleum in Lahore, Pakistan, June 29, 2015. Hundreds of Sikh pilgrims attended the ceremonies to commemorate 176th death anniversary of Singh. Singh was a former Sikh ruler of the united Punjab region under British colonial rule. (Photo by Mohsin Raza/Reuters)

A Pashtun girl carries her sibling while standing near her family home during a power outage in Karachi, Pakistan, July 5, 2015. (Photo by Akhtar Soomro/Reuters)

Men on motor cycles keep track as a man rides his donkey cart during a race through Karachi, Pakistan, July 5, 2015. (Photo by Akhtar Soomro/Reuters)

Men sleep on a street in the early morning to escape the heat during a major power breakdown in Karachi, Pakistan, July 8, 2015. A K-Electric spokesman said that almost half of Karachi city fell into darkness after the main power line from Bin Qasim power plant tripped on Tuesday evening, local media reported. (Photo by Athar Hussain/Reuters)

Siblings stand in the window of their single-room family quarters during a power outage in Karachi, Pakistan, July 8, 2015. (Photo by Akhtar Soomro/Reuters)

A man breaks his fast during the month of Ramadan at a mosque in Rawalpindi, Pakistan, July 8, 2015. (Photo by Faisal Mahmood/Reuters)

A hand of a Shi'ite Muslim woman reaches out to touch the gold-ornamentation of sword and shield, placed on a symbolic sacred horse for a good luck, during the religious procession of Yaum-e-Ali, marking the death anniversary of Imam Ali Ibn Abu Talib, son-in-law of Prophet Mohammad, in Karachi, Pakistan July 9, 2015. Imam Ali, who was also the cousin of Prophet Mohammad, died in 661 AD in Najaf. (Photo by Akhtar Soomro/Reuters)

A woman passes a baby boy to her relative from a window of the train that will take them back to their hometown, ahead of the Muslim Eid al-Fitr festival, at the Cantonment railway station in Karachi, Pakistan, July 12, 2015. The words on (top left) read in Urdu “Pakistan railway”. (Photo by Akhtar Soomro/Reuters)

Fishermen unload baskets of fish from a boat, after they returned from a day catch, along China Creek area of Karachi, Pakistan, July 12, 2015. (Photo by Akhtar Soomro/Reuters)

A boy shouts as he sells dresses at a stall ahead of Eid al-Fitr celebrations, which mark the end of Ramadan, in Rawalpindi, Pakistan, July 13, 2015. (Photo by Faisal Mahmood/Reuters)

Vehicles drive past as people shop at a market ahead of the Muslim festival of Eid al-Fitr, which marks the end of Ramadan, in Rawalpindi, Pakistan, July 13, 2015. (Photo by Faisal Mahmood/Reuters)

Women buy shoes at a stall ahead of Eid al-Fitr celebrations, which marks the end of Ramadan, in Rawalpindi, Pakistan, July 13, 2015. (Photo by Faisal Mahmood/Reuters)

Pakistani volunteers arrange plates for devotees to break their Ramadan fast in Islamabad, Pakistan, Sunday, July 5, 2015. Muslims across the world are observing the holy fasting month of Ramadan, when they refrain from eating, drinking and smoking from dawn to dusk. (Photo by Anjum Naveed/AP Photo)

Pakistani volunteers prepare food for devotees to break their Ramadan fast in Islamabad, Pakistan, Sunday, July 5, 2015. (Photo by Anjum Naveed/AP Photo)

A Pakistani youngster jumps into a canal to beat the heat as temperature reached 41 degrees Celsius (105.8 Fahrenheit) in Lahore, Pakistan, Sunday, July 5, 2015. Many cities in Pakistan are facing heat wave conditions with temperatures reaching up to 47 degrees Celsius (116.6 Fahrenheit) in some places. (Photo by K. M. Chaudary/AP Photo)

A Pakistani vendor waits for customers to sell caps in Karachi, Pakistan, Wednesday, June 17, 2015. Muslims throughout the world mark the month of Ramadan, the holiest month in the Islamic calendar, with dawn to dusk fasting. It is customary in some countries to wear caps when offering prayers in mosques. (Photo by Shakil Adil/AP Photo)

A Pakistani artisan prepares elements for a traditional costume at an embroidery shop in Karachi, Pakistan, Saturday, July 11, 2015. (Photo by Fareed Khan/AP Photo)

Pakistanis prepare traditional costumes at an embroidery shop in Karachi, Pakistan, Saturday, July 11, 2015. (Photo by Fareed Khan/AP Photo)

Pakistani children cool themselves off in a stream in Peshawar, Pakistan, Monday, June 29, 2015, during Muslim's fasting month of Ramadan. (Photo by Mohammad Sajjad/AP Photo)

A man cools off himself during a hot weather at a dam on the outskirts of Islamabad, Pakistan, Monday, July 13, 2015. Many cities in Pakistan are facing heat wave conditions with temperatures reaching 49 degrees Celsius (120.2 Fahrenheit) in some places. (Photo by B. K. Bangash/AP Photo)