Not enough resources?

This morning, my neighbour's car got stolen. Heard that a few guys dismantled their auto-gate, and towed the car out of their house around 4am.

Uh... the police report had been made in the morning, after neighbour discovered about the robbery. But... why there isn't any police officer come by for investigation? Not enough resources? Are they sure there is no witness? Or they already have enough source of information to continue with the investigation? Or they have totally gave up these kind of cases? Or because this is just a small case?