新闻：星期三上午9点40分在西北甘肃宁县乡校车超载事故。
The death toll in a school bus accident that occurred on Wednesday morning in the northwest province of Gansu has risen to 20 following the death of one child later Wednesday.
The accident happened around 9:40 a.m. in Yulinzi Township of Zhengning County, according to a statement from the bureau. The statement said five people died at the scene, including four children and their bus driver, while 15 others, their teacher included, were confirmed dead by the afternoon. The statement said another 44 children were injured in the accident and have been hospitalized. Twelve of the injured are in a serious condition. The truck was carrying coal, the statement said.
The bureau has blamed overloading for the accident, stating that the bus -- a van with nine seats -- was carrying 64 people.