A landlord told a court how his tenant from hell' accused him of murdering teenager Sally Anne Bowman in one of a series of abusive letters.

Janet D'Sa also accused Derek Jenkins and his wife Annette of exposing their naked bodies and of indulging in perverted sexual practices in letters which were also sent to Croydon Council.

D'Sa appeared at Croydon Magistrates' Court on Wednesday charged with three counts of harrassment. She is accused of waging a campaign against her landlords and a neighbour - as well as a postman who delivered letters to the block of flats where she lived in Tavistock Road, Croydon.

Mr Jenkins told the court how the relationship with his tenant soured after she complained of a faulty shower soon after she moved to the sixth-floor flat in September 2005.

When Mr Jenkins attempted to discuss replacing the shower pump, D'Sa barred his home, office and mobile number from her phone.

D'Sa, who claimed housing benefits, then stopped paying rent and wrote the first of four letters, accusing them of entering her home without permission and causing criminal damage in her flat.

She also accused Mr Jenkins of benefit fraud, of hitting his own wife and claimed the couple were engaging in incest and perverted three-in-a-bed sexual practices.

However Mr Jenkins said the worst claim was the suggestion he was involved in the murder of Croydon teenager Sally Anne Bowman, who was killed outside He said: "She reported me as a murder suspect in the Sally Anne Bowman case and claimed the police said even though I fitted the e-fit 100 per cent it was only my age that stopped them from arresting me.

"She said: I bet you did not rush out to give a DNA sample voluntarily'. It's upsetting to the point of being quite sick that somebody should make those sort of remarks.

"She also said she had to pay a £700 deposit because she refused to take part in perverted sexual relations with my wife or myself."

When D'Sa's lease expired in March 2006 she was served with a notice of eviction, which prompted her to change the locks.

D'Sa denies the charges and instead claims she is the victim of harrassment. Her solicitor said her client was concerned with her privacy and believed Mr Jenkins had entered the property without her permission - which he denies.

D'Sa also claimed Mr Jenkins initiated discussion with sexual connotations because he once made a light-hearted comment of "if you've got it, flaunt it".

The court will also hear evidence from D'Sa's neighbour James Biley, a company director, and postman Gary Spackman who also say they were also harrassed.

Cara Pickering, prosecuting, said this included D'Sa accusing Mr Biley in a letter of having a mental illness and of her taking photographs of Mr Spackman while he was on his post round - because he had previously caught her rummaging through his postbag.

The trial continues.