As the evenings start getting darker, officers are urging riders to use lights and wear reflective clothing.
Bournemouth Couple Threaten Pensioner With Knife
Detectives in Bournemouth are appealing for witnesses and anyone with information to come forward after an attempted robbery on a man in the Northbourne area of the town.
It happened just before 7am on Sunday 8 December 2013 in Redhill Common.
The victim, a 71-year-old local man, was approached by an unknown man and woman.
The pair threatened him with a knife and demanded money.
The victim refused and managed to punch and kick the man and run to safety.
Detective Constable Emma Hawkes, of Bournemouth CID, said:
"This was a nasty attack on a man while he walked alone and I am keen to establish exactly what happened.
"This attempted robbery happened early in the morning, and I am confident there would have been other people in the area at the time who may have witnessed what happened or have details about those responsible.
"Fortunately the victim managed to escape uninjured and the offenders were left empty handed.
"I urge anyone with information to call Dorset Police in confidence at the earliest opportunity.
"The male offender is described as white and dressed in dark clothing. The victim is unable to provide a description of the woman due to the poor light at that time of the morning."
No one has been arrested.
Witnesses and anyone with information should call Dorset Police in confidence on 101, quoting incident number 08:128. Alternatively, call the free and anonymous Crimestoppers line on 0800 555 111 where mobile phone tariffs may apply.
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