Two arrests were made by police following a robbery and a burglary in Preston.
A police search helicopter was seen flying above the Larches estate at around 11.30pm on Tuesday.
Police said a woman had her mobile phone snatched from her in an incident in Preesall Road at around 10.30pm.
It is thought she was known to her offender, who is believed to be a teenage boy.
Two suspects were then seen breaking into a garage of a home in The Ploughlands at around 11.40pm.
They ran away but were caught nearby. The pair had made off with a gas canister but this was found at the scene.
Officers said a local youth was arrested on suspicion of robbery and a 27-year-old local man was arrested on suspicion of burglary. Both are currently in police custody.
They said it was not known whether the second person involved in the burglary was the same youth.