Former boxing champion Congestina Achieng was among patients who escaped from Mathari hospital on Monday.
Police however captured her at around 12.30pm and returned her to the ward.
At least 87 patients escaped from the facility on Monday morning after being reportedly incited by nurses who had boycotted work to push for implementation of a Collective Bargaining Agreement (CBA) signed in June 2013.
Police have so far managed to capture 13 patients who had escaped.
The hospital specialises in treatment of patients with mental conditions.
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