A car laden with explosives detonated during rush hour in the centre of the Turkish capital of Ankara, killing at least 28 people.

The target of the blast, which also injured at least 61 people, was a convoy of military service vehicles in the administrative centre of the capital city.

Footage shows several cars slowing as they pass a convoy of buses, reported to have been carrying members of the armed forces, which was attacked as it waited at traffic lights.

The attack took place near a busy intersection less than 500metres from parliament, and also near to the city's armed forces' headquarters and government buildings, during the evening rush hour.

Although reports are unconfirmed, Turkish security officials told Reuters that initial signs indicate the Kurdistan Workers' Party (PKK) insurgents were behind the attack.

However, separate security sources in Turkey's mainly Kurdish southeast gave a different account, saying they believed ISIS militants were behind the bombing.

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