There's been an explosion followed by the sound of gunfire in Kabul, NPR's Sean Carberry and other journalists report from the Afghan capital.
Reuters says the explosion occurred "at about 4 p.m. local time in a downtown district. ... There was no word on any casualties." The BBC reports gunfire can be heard near the headquarters of the Afghan intelligence service.
Sean tweeted just after 8:25 a.m. ET (4:55 p.m. in Kabul) that there's "ongoing gunfire near scene of blast in Kabul. Police keeping a perimeter of a couple blocks."
We'll monitor the news from Kabul and update as the story develops.
Update at 11:10 a.m. ET. Two Attackers Reportedly Dead; Foreign Casualties Reported:
NPR's Sean Carberry tells our Newscast Desk that Afghan authorities say one attacker detonated an explosive vest and was killed. Another was killed during the gun fight with Afghan security forces. Two other attackers are said to still be battling with authorities at this hour. Officials also say that there are some causalities among the foreigners who live or work in the area.
Update at 10:30 a.m. ET. Report Of Taliban Claiming Responsibility:
"A guesthouse for staff of the International Organization for Migration (IOM) was hit in the blast, and two of its staff were injured. A Taliban spokesman told the BBC that the guesthouse had been targeted."
Update at 9:30 a.m. ET. AUDIO Report From NPR's Correspondent, Including Sound Of Gunfire.
Sean Carberry just spoke with our Newscast Desk. As he was talking about what was happening, more gunfire could be heard:
"It started with a large explosion that has shattered windows for a few blocks away from the site," Sean said. "It's been followed by heavy volleys of gunfire — heavy weapons, light weapons. As you can hear right now there's another volley of fire going on. What is still unclear: They have not been able to determine the targets of the blast — there's a U.N. guest house [and] there are some other offices in the area where this happened."