The private Afghan channel Tolo News quoted an eyewitness as saying that the blast took place in the Sarahi Allauddin area of the city.
Emergency, an NGO that provides free medical and surgical treatment to Afghan citizens, said in a tweet that 20 people had been treated at its hospital since the blast.
A series of deadly bombings, mainly targeting the Hazara Shiite community, has rocked several Afghan cities over the past two weeks.
A bomb blast during Friday prayers at a mosque in Afghanistan’s Kunduz province killed 33 people and wounded dozens last week, according to Taliban spokesman Zabihullah Mujahid.
The blasts followed other attacks in recent days – one in the northern Afghan city of Mazar-e-Sharif and another in Kunduz, as well as several high school and education centers in western Kabul earlier this week.
ISIS-linked groups and Taliban rival ISIS-Khorsan (ISIS-K) have claimed responsibility for most of the recent attacks. No group has claimed responsibility for Friday’s blast.