Seven students at a primary school in Southwest China remain in the hospital after they had eaten a free meal provided by the government and got sick, according to a local official.

The rest of the 79 students, who all attend the Babuzhen Central Primary School, in Bijie city's Zhijin county, Guizhou province, have been discharged, according to Chen Guangshi, director of the county's publicity department.

Eighty-six students at the school began to vomit and suffer abdominal pains after they had eaten the free breakfast on March 29.