Lincolnshire Police are appealing for information after a number of attempted robberies in Lincoln.
All of the incidents happened in the early evening of March 24, near to the city centre.
The first happened at around 5.45pm on Dixon Street, where a woman was approached by a man on a pushbike, demanding money. She did not hand over anything and was helped by staff at a car wash.
The suspect rode off towards the High Street.
The next incident happened at around 5.50pm on Firth Road.
A man was walking over the bridge by the riverbank, heading to Boultham Avenue when he was approached by a man on a pushbike, thought to have been a black BMX. The man demanded money, but was refused. The suspect then punched the man.
The third incident took place around the same time as the other two, along the riverbank path near the J Arthur Bowers factory.
A man was approached by a man on a pushbike, who again demanded money and the victim’s food shopping. Again, the victim was punched in the face when he refused.
However in this incident when the victim tried to walk away, he was grabbed by the suspect, but managed to get free.
The offender then rode his bike in the direction towards town.
In all the incidents, the man is described as white, around 6 foot 2, in his mid 20s, of stocky build, clean shaven with short fair hair, and wearing a light grey coloured hooded top with similar coloured jogging bottoms, or blue jeans.
Anyone who may have seen the suspect around this time or may have witnessed the incidents should contact PC 963 Caroline Lazenby on 101, quoting incidents 346 or 347 of 24/03/2014, or incident 65 of 26/03/2014.
Alternatively contact Crimestoppers anonymously on 0800 555 111.