Suicide bombers and gunmen launched apparent coordinated attacks on two Kabul police stations on Wednesday, with witnesses reporting on social media that both assaults are still under way.

Several loud explosions were heard in the heart of the Afghan capital followed by gunfire that was confirmed by Afghan officials and witnesses.

In the first attack, a suicide bomber blew himself up outside a police station in the west of the city, sparking a gunfight between other militants and officers, interior ministry spokesman Najib Danish told AFP.

Ariana TV footage showed a thick plume of black smoke rising into the sky.

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“The second attack happened in front of police precinct 10 in Shar-e-Naw in central Kabul,” Danish added.

“Two attackers who tried to enter the police compound were shot dead.”

There was no immediate claim of responsibility for the attacks that comes just over a week after twin blasts in Kabul killed 25 people, including AFP chief photographer Shah Marai and eight other journalists.

Those attacks were claimed by the Islamic State group.

Kabul has long been one of the deadliest places in Afghanistan for civilians.

On April 22, a suicide bomber blew himself up outside a voter registration centre in the city, killing 60 people and wounding more than 100.