Kolkata, Oct. 25 -- An 11-year-old boy died within about 90 minutes of being admitted to Calcutta Medical College on Sunday, prompting his family to allege medical negligence and the administration of an incorrect injection, while the hospital authorities promised an investigation into the complaint.

Pavan Yadav, a Class IV student from Andul, was brought to the hospital's Mother and Child Hub around 10 am after complaining of abdominal pain while visiting his maternal uncle's house in College Street.

According to his family, the boy was able to walk into the hospital but was declared dead around 11.30 am.

The death triggered tension on the hospital campus in the afternoon, with the boy's relatives confronting police and security personn...