A court in the Turkish capital of Ankara has ordered a ban on access to Facebook and Twitter on Sunday evening, after images from a deadly car bombing earlier in the day were shared on the social media platforms.

Several local users reported difficulty in accessing the sites. Turkey last year blocked access to Twitter over the sharing of photographs of a prosecutor being held at gunpoint by far-left militants.

At least 32 people were killed and over 70 wounded when a vehicle laden with explosives detonated close to bus stops near a park at Ankara's main square, Kizila, local media reported.

No organization has claimed responsibility for the attack yet. A Turkish security official said that initial findings suggest the attack was carried out by the Kurdish PKK militant group or an affiliated group.

The Turkish broadcasting authority RTÜK issued a ban on networks for coverage of the attack.