Uganda arrests, then releases, top Presidential challengers

Two top presidential hopefuls in Uganda have been released, hours after they were arrested.

Veteran opposition leader Kizza Besigye and former Prime Minister Amama Mbabazi were arrested just hours before they were due to appear at separate campaign rallies.

In June police banned Mbabazi from holding meetings to promote his challenge against Museveni, saying their party had not yet nominated a candidate.

Ugandan presidential challengers Kizza Besigye (seen left) and Amama Mbabazi were arrested and then released

Mbabazi previously enjoyed a close relationship with Ugandan President Yoweri Museveni, who has been Uganda's leader since 1986, but the relationship soured with Museveni accusing Mbabazi of taking decisions in the ruling party without consulting him. Mbabazi was sacked by Museveni in 2014.

Besigye and other former political and military comrades accuse Museveni of straying from the ideals that led them to wage a war against dictatorship.