Islamabad, Pakistan (CNN) -- Some 200 houses were damaged in a southwestern province of Pakistan after an earthquake with a magnitude of 7.2 struck Wednesday, officials said. 

The mud-walled houses were damaged in districts close to the epicenter, said Ahmed Kamal, spokesman for the country's National Disaster Management Authority. Hundreds of tents, blankets and ready-to-eat meals were sent to the affected area, he said. 

The earthquake occurred at 1:23 a.m. Wednesday (3:23 p.m. Tuesday ET) at a depth of 84 kilometers (52 miles), the U.S. Geological Survey said. It was centered 45 kilometers (30 miles) west of Dalbandin, and 1,035 kilometers (640 miles) west-southwest of Islamabad, the USGS said on its website. 

There were no reports of injuries or deaths, Kamal said. 

The United States, China and Australia had offered aid to Pakistan, but it had not been initially accepted, Kamal said. 

"The offer was appreciated but not accepted because its not required yet," he said. 

Arif Mahmood, director of the Pakistan Meteorological Department, put the epicenter at 320 kilometers (about 200 miles) southwest of Quetta near Kharan, Balochistan, and said it had been felt in Punjab, Sindh, and Balochistan provinces in Pakistan, as well as parts of Iran and India. 

Mahmood predicted major aftershocks. "Earthquakes with such magnitudes in the past have brought on aftershocks," he told CNN from Islamabad. 

An official at Quetta's Civil Hospital said a female cardiac patient suffered a fatal heart attack during the earthquake. He said two residents raced to the hospital but they proved not to have been injured, just scared. 
How many countries offered help?
he United States, China and Australia had offered aid to Pakistan, but it had not been initially accepted, Kamal said. 