There are two-seat helicopters, a usable configuration for law enforcement IMO if not encumbered with equipment (FLIR and spotlight are very desirable). But range is important - I’d want a few hours at least.
(Chasing local thieves is one thing but police have had to chase a car quite a distance, length of Fraser Valley in one case, in other cases surveillance such as tracking a vehicle to its destination. (Also a case in FV, I forget why, hit and run and robbery are conceivable - get more information on perps and associates, perhaps recovering other loot.)