Up to 50 officers have been deployed to deal with an armed siege in Oxfordshire where a man is holding a two-year-old girl, the Oxford Mail reported.
Kidlington Neighbourhood Policing Team said: "This is a contained incident and neighbourhood officers will be carrying out patrols speaking to residents.
"We strongly advise you to avoid the roads in and around Morton Avenue as there will not be any access".
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In some cases, victims of violence and other serious crimes face long delays as forces are unable to dispatch officers promptly.