Parents were put on alert today after a man approached children in a post office.

A mother called police after he spoke to her four young children in a post office in St James's Street, Brighton.

He asked whether they were all together or on their own.

The same man was seen later lifting the curtain of a photo booth and speaking to the child inside.

Inspector Julie Wakeford of Brighton police said: "We would urge everyone to be vigilant."