"I have not conducted any cases that would have caused aggression. I think this is intimidation," Shefir told a joint news briefing with police and Interior Minister Denys Monastyrsky.
A volley of automatic gunfire hit a car carrying a senior aide to Ukrainian President Volodymyr Zelenskiy on Wednesday, an incident a senior official called an assassination attempt and Zelenskiy said may have been a message intended for him.
The aide, Serhiy Shefir, survived unscathed but police said his driver had been wounded after more than 10 bullets hit the car near the village of Lesnyky, just outside the capital Kyiv.
A local television station said at least 19 bullet holes could be seen on the driver's side of the car.