The Lato-branded milk products were seized by Ugandan authorities for being substandard
Uganda has protested over the seizure of milk and milk products worth $360,700 (£276,300) by the Kenyan authorities on allegations of being contraband and substandard.
The Ugandan-made products, under the Lato brand, were seized on separate dates this month.
Uganda's Ministry of Foreign Affairs has written to the Kenyan High Commission demanding the immediate release of the consignment.
It accused its neighbour of contravening a treaty of the regional bloc East African Community allowing for the free movement of goods.
Uganda said it was exercising "maximum restraint" on Kenya's imports, but "reserves the right to reconsider this position".
The protest comes a day after Kenya's President Uhuru Kenyatta announced a 16% value added tax on all imported milk products that originate outside the East Africa community.
His family is the majority owner of Brookside Dairies, the country's largest milk processor.
Mr Kenyatta said the measure was intended to protect local farmers who are facing a glut and low prices.
