An alleged jewel thief who sealed his crime with a kiss was caught after police analysed the DNA on his victim's cheek

Last April, two masked men tied the jeweller up in her apartment, poured what they said was petrol over her head and threatened to ignite it if she did not tell them codes for the alarm in her shop, Le Parisien said.

One of the men went to the store, stealing cash and jewels while the other stood guard over the 56-year-old jeweller, identified by the paper only as Anne. Before releasing her, he kissed her on the cheek.  He claims he kissed her to 'allay her trauma'

Police extracted DNA from the kiss and it later led them to a man who was detained in the south of France on suspicion of another crime.

The man has said he was just a lookout and that he kissed the jeweller to 'allay her trauma'. He was remanded in custody while police were still looking for his accomplice, Le Parisien said.