KABUL - Afghanistan's capital Kabul was attacked by Pakistani air power at around 5:40 am local time on Sunday, triggering a series of explosions and the Afghan air defense forces' fire response against aerial targets.

This round of airstrikes lasted for about 20 minutes.

In recent days, military tensions between Afghanistan and Pakistan have escalated, with several rounds of exchange of fire.

Meanwhile, at least 52 people have been killed and 66 others injured in Pakistani airstrikes in Afghanistan since last Sunday, Hamdullah Fitrat, deputy spokesman for the Afghan government, said on Saturday.

According to the official, the casualties were reported across the eastern provinces of Nangarhar, Paktika, Khost and Kunar, as well as southern Kandahar.

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Clashes erupted along the border between the two countries about a week ago. Since then, officials have reported that the cross-border hostilities have resulted in numerous casualties from both sides.