At least 10 people have been killed and over 70 others injured during twin bomb explosions in a busy market in the Kenyan capital Nairobi, officials say.

Police said a blast hit a 14-seater public minibus, known as matatu, while another bomb went off inside the Gikomba Market just east of Nairobi’s busy central business district, the National Disaster Operation Centre (NDOC) said Friday.

The two explosions were caused by improvised explosive devices and “were detonated simultaneously,” said Nairobi police chief Benson Kibue.

One suspect has been arrested over the attack on the second-hand clothes market in the city.

A spokesman at the Kenyatta National Hospital, Nairobi's main hospital, said at least 70 people have been injured in the incident, many of them in serious condition.

“Many of the injured are bleeding profusely. We need a lot of blood,” the spokesman, Simon Ithae, said as the hospital issued an appeal for donors.
Nairobi and the port city of Mombasa have been rocked by a series of explosions since September.

On April 13, four people, including two police officers, were killed in a car bomb explosion outside a police station in a poor neighborhood of Nairobi.

In September last year, an attack on the Westgate Mall in Nairobi killed at least 67 people.

Somali fighters have been blamed for the attacks.

Al-Shabab fighters said the raid on the mall was in retaliation for Kenya’s military presence in Somalia. The Kenyan forces along with troops from Uganda, Burundi, Djibouti, Sierra Leone, and Ethiopia are part of the African Union Mission in Somalia (AMISOM).