Detectives investigating the death of 15-year-old Caitlin Shortland in Portadown at the weekend have arrested a third person.
The 15-year-old youth was detained this afternoon and remains in custody assisting police with their enquiries.
Two teenagers – aged 17 and 19 – arested on Monday evening were questioned and subsequently released on bail while the enquiry continues.
Caitlin Shortland died in hospital on Saturday evening after she was discovered unconscious by officers at a woodland in the Corcrain area of Portadown.
A number of searches have also been carried out and a quantity of suspected ecstasy tablets have been seized.
Detectives continue to appeal for information and to warn the community of the dangers of drugs. Police can be contacted on the non-emergency number 101.