12/10/2016 11:39 BST

Sidney Kilmartin, Who Posted Cyanide To Suicidal Briton Andrew Denton, Faces Life In Prison

Prosecutors allege Kilmartin sent the deadly dosage to stop Denton reporting fraud.

An American man faces life in prison after posting cyanide to a suicidal Briton, leading to his death.

Sidney Kilmartin, 54, has been found guilty in relation to Andrew Denton’s death.

Denton, 49, from Hull, died in 2012 after being sent the poisonous substance which he used to kill himself in his home. 

Sidney Kilmartin (pictured) has been found guilty in relation to Andrew Denton's death.

Kilmartin had previously mailed a substance he claimed was cyanide, that was actually Epsom salts, to several suicidal people. 

Prosecutors said Kilmartin sent the deadly dosage to Denton to stop him reporting the fraud.

Kilmartin was found guilty by a jury in the US on Tuesday of mailing injurious articles resulting in death and witness tampering.

Kilmartin, who lived in Windham, south west of Bangor in the state of Maine, had already admitted mail fraud and wire fraud.

Kilmartin had posed as a jeweller to convince a distributor in California to send him 100 grams of the poisonous chemical for about £105, according to evidence from a US postal inspector.

Kilmartin faces the possibility of life in prison.

The trial, which began on 3 October, heard Kilmartin would present himself to suicidal people as an “angel of mercy”, the BBC reported. 

No date for sentencing has been set.