Nairobi, Feb. 11 -- When Mercy Nelima said goodbye to her four-year-old son last Friday morning, she had no idea it would be the last time she would see him alive.

Liam Kipruto, described by the family as a cheerful and active boy, died nine hours after he last left their Katani home in Machakos County.

According to Ms Nelima, her son, who was a Pre-Primary 1 pupil at Goodrich International School, was run over by a school bus and no one was willing to give details of what happened until the school's headmaster sent a text message on Sunday.

Goodrich International School in Mavoko sub-County, Machakos, was founded by the late Gideon Kimulu Kyalo. It has branches in Kileleshwa and Embakasi.

On the fateful day, Ms Nelima had left her mo...