Devon and Cornwall Police claim a fifth of their time is now spent dealing with people who have mental health problems.
They say shrinking budgets are causing tension between police forces and healthcare providers.
The force's Assistant Chief Constable Paul Netherton says it's unacceptable.
Alison Hernandez secures third term as police and crime commissioner
She'll continue tackling major issues on her to-do list
How Exeter's traffic troubles influenced council vote
LTN campaigner ousts Labour candidate
Labour tightens grip on Plymouth City Council power
They've gained nine extra seats
Radio Exe newsreader to abseil down Exeter Cathedral
Josh Tate will descend over 100 feet on Saturday
Labour retains control of Exeter City Council
Despite losing a seat to the Greens and an independent
Colyford pushes for more action in ongoing spat with Colyton
East Devon District Council's been asked to intervene
