A Kenyan MP has been arrested after saying he would beat up foreign traders if they did not leave the country.
Charles Njagua Kanyi said in a video that Tanzanian and Ugandan traders were taking Kenyan business and "enough is enough".
A diplomatic row erupted and Tanzania's prime minister summoned the Kenyan high commissioner for an explanation.
Kenya is East Africa's economic hub, attracting people from across the region to move there to make money.
Mr Kanyi, whose constituency includes the large Gikomba market which attracts foreign traders, was recorded saying the comment in a video widely shared on social media.
"When you look at our market, Tanzanians and Ugandans have taken our business, enough is enough, if we will give them 24 hours and they will not leave, we will beat them and we are not scared of anyone," he can be seen saying as people around him cheer in agreement.
The MP from the ruling Jubilee Party, who is also a singer by the stage name Jaguar, then repeats the phrase "enough is enough" as people applaud.
Other Kenyan politicians distanced themselves from the comments, and the government has said it condemns the comments in the strongest possible terms.
Tanzanian opposition leader Freeman Mbowe said the comments could not be ignored.
After Prime Minister Kassim Majaliwa met High Commissioner Dan Kazungu, Mr Majaliwa said he had been reassured that the comments were not coming from the Kenyan government.