Robbers posing as police officers have committed a string of thefts. Among the victims of the cruel group are thought to have been a 94-year-old woman who was conned out of £20 in Cosham, in Hampshire, while officers say the thieves struck again later in the day when their burglary attempt on an 80-year-old woman in nearby Totton was foiled. Police warn residents to always ensure they ask for an officer's warrant card to check their ID.