Just before midnight, the incident occurred in a house on Ploskovická Street. Two people were stabbed ending up in the care of paramedics and then in the hospital. The stabber got away.
The suspect is said to be a 14-year-old child, according to unconfirmed reports on-sight.
Police said on Wednesday morning that they were looking for a 13-year-old armed but not dangerous boy. It is not yet clear whether the two cases are related.
A large number of police officers began searching the area almost immediately. A police helicopter with thermal imaging took off into the air, and a special law enforcement unit headed for Ďáblický háj.
However, the police failed to track down the suspect so far.