At least one people was killed and six others wounded after a suicide bombing rocked a diplomatic district in central Kabul Saturday morning, a spokesman of the Interior Ministry said.
The attacker also died on the spot after the attack which occurred around 8:20 a.m. local time (0350 GMT) in Shash Darak locality, and two of the wounded were in critical condition, spokesman Najib Danish told local Tolo News TV.
Sirens could be heard after the blast in the fortified area where the U.S. embassy, NATO-led coalition forces' headquarters, government office buildings and scores of apartment buildings are located, witnesses said.
The target of the blast remained unknown.
The security forces have cordoned off the area as precautionary measures.
"More details would be made public later as an investigation is underway to find more facts about the incident," Danish added.
No group has claimed responsibility for the attack yet.
The capital city with a population of nearly 5 million has been hit by series of terror attacks over the past couple of years.
On Dec. 25, eight people, including five civilians, were killed and two others wounded after an Islamic State (IS)-claimed suicide bombing struck the same area.
More than 3,430 civilians were killed and over 7,000 others injured in conflict-related incidents in 2017, according to figures released by the United Nations mission in the country.