"As a result of the incident near the district shopping center, two children born in 2017 were injured ... Doctors assess the condition of the girls as grave and extremely grave," TASS reports.
In the head office of the Investigative Committee for the Altai Territory, they announced the start of an inspection on the fact of an emergency.
"Employees went to the scene to inspect the scene, the issue of initiating a criminal case is being resolved," the statement said.
In April, the prosecutor's office of the Omsk region began checking the compliance with safety requirements at an amusement park, where an 11-year-old girl broke her spine while jumping on a trampoline.
The newspaper Realnoe Vremya also reported that three children were seriously injured in the Kazan trampoline center.