A TOP judge says she needs time to ‘get the verdict right’ of a boy on trial for supplying lethal drugs to tragic teenager Ellie Jones.

Suspects involved in the death of the 16-year-old had time to 'contaminate' evidence and 'confer' with each other, a court heard this week.

The St Gregory's High pupil had difficulty breathing after taking PMA on May 17, 2013 and was rushed to hospital but could not be resuscitated.

A 17-year-old boy, who cannot be named for legal reasons, has been charged with two counts of supplying class A drugs to Ellie and a boy who was aged 15 at the time, and his trial finished at Halton Magistrates' Court on Tuesday.

The defendant has denied any knowledge of the class A drugs found in the house on Densham Avenue, where a group of teens had been drinking.

Carmel Wilde, defending, said each witness at the scene was a suspect and had a motive to lie about what took place.

"The case is an eye-opener to the lives of the young people but it can be agreed that nobody intended the tragic consequences," she added.

"There was time for contamination and conferring, and regrettably there are no independent witnesses.

"There seems to have been a failure to guard the scene and we must ask who else had a key to the property?"

The court heard how a witness claimed he was 'livid' with the defendant as he was not responding to attempts to wake him up to help Ellie.

But the defendant said he was woken up by the screams of others in the house.

Mrs Wilde told the court how the witness in question sent a text to the defendant the following day, asking if he was 'alright'.

"This is not an indication of somebody who is angry at someone else for allegedly causing the death of a friend," she said.

Forensic analysis found Ellie had taken PMA with a fatal dose.

Officers found 15.5g of the drug in the freezer during a search of the house and a bottle of vodka which also contained PMA.

Prosecuting, Wendy Newton told the court that the defendant took out a clear plastic bag containing white powder from the bottom fridge freezer drawer on the night and was seen with it regularly during the evening.

"The defendant hid the drugs in a bag in the freezer but through the course of the night he kept going to the bag and controlled the contents of the bag," she added.

Mrs Newton described Ellie as looking increasingly intoxicated and witnesses said she was stumbling and swaying.

Her condition deteriorated and eventually an ambulance was called at 3.35am on May 18 before she died at Warrington Hospital at 4.50am.

District judge Bridget Knight will now reflect on the evidence before giving a verdict at Warrington Magistrates' Court next Wednesday.

"I have got to take some time as I want to get it right in this most tragic case," she said.