Residents in Norwich are being warned to ensure they keep their homes secure after a number of burglaries over the past few weeks in the city.

The burglaries have all taken place during evenings or overnight, with entry being gained via unlocked doors. Typical items stolen include cash, laptops and mobile phones.

These incidents have included:

• A break-in at an address in Bowthrope Road sometime between 10.10pm on Monday September 19 and 3am on Thursday September 22 when someone broke in through an unlocked conservatory door and stole cash.

• A burglary in Watling Road took place between 8pm on Wednesday September 21 and 6am on Thursday September 22. Again the property was left unlocked and a Sony Ericsson mobile phone and a tablet were taken.

• A number of burglaries took place at addresses in Wilberforce Road, between Wednesday September 28 and Thursday September 29 with items stolen including cash, mobile phones, a Samsung laptop, a HP laptop and a black and red Targus laptop rucksack.

• Between 7pm and 8pm on Wednesday October 5 a property was broke into on St Olave's Road where a black and silver iPod touch, Phillips headphones and tobacco were stolen.

• And between 10.45pm on Thursday October 13 and 4am on Friday October 14 an unknown person broke into an address in Fitzhenry Mews and stole a white Apple iPhone and a Samsung Galaxy Ace 4 mobile phone.

Chief Inspector Nick Paling, of Norfolk Constabulary, said: 'These are opportunist crimes where the offenders are targeting insecure properties and looking for things they can steal relatively quickly – for example handbags left in hallways, wallets on kitchen worktops, or laptops in living rooms.

'I would like to remind residents to keep all doors locked as a matter of routine, but especially during the evenings and overnight – don't give burglars an easy way in. Windows should also be kept closed and secured if you are out, or at night.

'If you believe you have seen anyone acting suspiciously in your neighbourhood then please call us with any descriptions or details that may assist our enquiries.'

• Anyone with any information is asked to contact Norfolk Constabulary on 101.