"He tested so far positive for alcohol, 0.37 milligrammes per litre. We are testing him as well for banned substances," Laura Dan told Reuters.
According to emergency service officials, a 20-year-old man stabbed a local resident, took his car, hit at least two people on the ring road, and then rammed the doors of a shopping mall in the Romanian city of Braila, injuring seven people, including two children.
The suspect was immobilised by shoppers and a few minutes later arrested by the local police officers.
The stabbing victim had chest and stomach wounds and underwent surgery in Braila Emergency Hospital.