Rescuers transfer a wounded man at a blast site in Nairobi, Kenya, on Jan. 26, 2019. At least one person was seriously injured after a suspected improvised explosive device (IED) exploded in a busy street in Kenyan capital of Nairobi on Saturday, the police said. (Xinhua/Nyalwash)

People gather at a blast site in Nairobi, Kenya, on Jan. 26, 2019. At least one person was seriously injured after a suspected improvised explosive device (IED) exploded in a busy street in Kenyan capital of Nairobi on Saturday, the police said. (Xinhua/Nyalwash)

Rescuers transfer a wounded man at a blast site in Nairobi, Kenya, on Jan. 26, 2019. At least one person was seriously injured after a suspected improvised explosive device (IED) exploded in a busy street in Kenyan capital of Nairobi on Saturday, the police said. (Xinhua/Nyalwash)

People gather at a blast site in Nairobi, Kenya, on Jan. 26, 2019. At least one person was seriously injured after a suspected improvised explosive device (IED) exploded in a busy street in Kenyan capital of Nairobi on Saturday, the police said. (Xinhua/Nyalwash)