"We want our people to be in the right place, at the right time doing the right thing. This means that foot patrols may have reduced in favour of mobile patrols, road policing, static patrols and liquor licence checks," Mr Forlong said.
Labour is campaigning for election and says it will fund an extra 1000 police in New Zealand during its first term in office.
Leader Andrew Little said that would bring the police to population ratio back below 1 in 500, as it was in 2008. The party claims crime has increased because police are underfunded and stretched too thinly.
The party used the Official Information Act to ask about crime statistics for the Whanganui police area. The figures show drug supply crime up 61 per cent, drug use crime up 47 per cent, robbery up 50 per cent and vehicle theft up 19 per cent.
Police didn't believe the increase in crime could be attributed to fewer foot patrols, Mr Forlong said.
"There are many drivers of crime and it would be unwise to try to attribute it to a single factor."