A series of knifepoint moped robberies around Merton are now being linked by police.

The latest in the long line of attacks took place in Church Road, Mitcham, on September 29.

The victim, a man in his 50s, was walking his dog when he was approached by three suspects on two black mopeds.

He was threatened with a knife and forced to hand over his Rolex watch.

At 3.45pm that same day, just three minutes after the previous attack, police were called to that same road following reports of an attempted robbery.

A woman, aged in her 30s, was surrounded by men on mopeds who asked about the make of her watch.

She managed to leave the scene without any possessions being taken.

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No injuries were reported.

Police believe these incidents are linked to two separate attacks which took place two weeks prior.

The first incident saw a Wimbledon Village jewellery store robbed on September 12, while three days later a man out for a walk in Southside Common with his grandkids was robbed of his watch.

No arrests have been made and enquiries are continuing.

Anyone with information is asked to call 101.