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Write a 50 word summary of the following: Nairobi, Kenya (CNN) -- At least 10 people were killed in two explosions Friday in central Nairobi, the Kenya National Disaster Operation Centre said via Twitter.
As many as 76 people were wounded in the blasts at the Gikomba market and on a public minibus, the disaster agency said. Ambulances evacuated 43 injured males and 33 injured females, the Centre said via Twitter.
Two suspects were arrested in connection with the explosions, which were caused by grenades, according to Nairobi Police Commandant Benson Kibuye.
There have been no claims of responsibility in the attack.
Kenyan President Uhuru Kenyatta expressed his sympathy to those affected by the blasts, the Interior Ministry said via Twitter.
The explosions came after the United States, Australia and UK issued travel alerts for the African nation Thursday.
Hundreds of vacationers were evacuated from Kenya the same day in response to the alerts, which warned of a "high threat" of terrorist attacks.
An attack in Kenya on Friday has killed at least 10 people and injured up to 76. The Nairobi police have arrested two suspects, but no terrorist groups have claimed responsibility for the attack. Many international travelers had already evacuated Kenya after the US, Australian, and British governments issued travel warnings for the area.