At least 40 people have been killed and dozens wounded in a blast in Kabul near the offices of a news agency and a cultural centre, the interior ministry has said.
The explosion early on Thursday struck an area close to both the Afghan Voice news agency and Tebyan cultural centre, local media reported.
1TV News, quoting an interior ministry spokesman, said a suicide bomber was likely to have been behind the attack.
There was no immediate claim of responsibility, but the Taliban denied involvement.
According to one survivor, activists had gathered at the Tebyan social and cultural activity centre for a meeting when a suicide bomber detonated his explosives, TOLO News reported.