KISII, Kenya, Feb. 14 (Xinhua) -- At least seven people died and two others were injured in a grisly road accident in Kisii County of Western Kenya on Tuesday evening, according to police.

Philip Wambugu, divisional police commander of town Keroka, confirmed on Wednesday that the accident occurred along Kisii-Keroka highway, when the driver lost control of the vehicle before it veered off the road.

"The vehicle was carrying six passengers. We will confirm the nature of other survivors who are hospitalized," said Wambugu, he added that two injured predestrians also has been rushed to the hospital.

The police commander said the car was speeding when the accident happened. The police suspected that the brakes was failed when the car was descending a steep slope.

According to the National Transport and Safety Authority (NTSA), the death toll has ascended to more than 300 since Dec 1, 2017.

According to NTSA's preliminary investigations, the causes of these crashes include overs-peeding, lane indiscipline, reckless driving and driving under the influence of alcohol.