Over 120 children and two adults have been hospitalised after eating in a school cafeteria in Russian city of Perm, the Prosecutor General's office said Friday.
From Wednesday to Friday, 123 students and two teachers have applied for medical assistance, said the office's press service.
Doctors said all these people were infected with salmonella after having dinner in their school's canteen.
Twenty-six children, two of them in grave condition, are still in hospital for further treatment, a doctor of the region's children hospital told reporters.
An investigation into the cause of the accident is being conducted.