Around 100,000 people have fled the city of Guriel, also known as Guriceel, in the north of the country due to the violence.
The state of emergency granted authorities sweeping powers to arrest and crackdown on “enemies of the state.”
Taking the knee during sports tournaments is a gesture that has become a feature before play around the world.
A government statement said the envoy was declared “persona non grata in view of his actions incompatible with his status”.
Islamic State claimed responsibility for the blast in a statement posted on a Telegram channel late on Sunday.
Somalia has an estimated 2.9 million internally displaced persons, one of the most in a single country.
Prime Minister Abdalla Hamdok and five cabinet members of the ruling Transitional Sovereignty Council were taken into custody on Monday morning, per local media.
Three people were said to have dropped off a polythene bag in Kampala, which later exploded, killing one person and injuring five others.
The issues have always been with us but the solutions have never been available.
Dozens of separatists, armed with guns, were said to have ambushed and attacked a military convoy.
