There has as yet been no claim of responsibility for the attack.?
A suicide bomber struck Kabul Monday morning close to the country's national intelligence agency -- the National Directorate for Security.
Officials said six people were dead and three wounded.
"Six people were martyred and three others were wounded," AFP reported interior ministry spokesperson Najib Danish as saying.
The attacker struck as NDS employees were arriving at work.
AFP quoted Danish as saying the six people who died had been in a car when the attacker struck.
"They were hit when they were passing the area in their Toyota sedan vehicle," Danish said.
He added that the attack had taken place on the main road, not inside the NDS compound, and that authorities were still not certain what the attacker's intended target had been.
There has as yet been no claim of responsibility for the attack.
Islamic State had however claimed the attack a week ago on an NDS training facility in Kabul.
(This is a developing story)