ISLAMABAD — A powerful earthquake rattled Pakistan’s capital and other cities on Sunday, killing one person in the northwest and wounding 30 others, officials said.

Pakistani official Arif Ullah said the magnitude-7.1 quake was centered near neighboring Afghanistan’s border with Tajikistan. Germany’s GFZ Research Center for Geosciences set the quake’s magnitude at 6.5.

Residents fled their homes and offices in the capital, Islamabad, as buildings swayed. Television footage showed people praying in public. Tremors were felt as far away as the Indian capital, New Delhi.

Two officials at Pakistan’s National Disaster Management Authority said the quake toppled the walls of homes in the northwest, killing one person. They said 30 wounded people were taken to hospitals in the northwest.

Ahmad Kamal, a spokesman for the authority, said postquake landslides were a potential threat.

Pakistan is an area of high seismic activity. In 2005, tens of thousands were killed when a 7.6-magnitude earthquake struck in Kashmir.