Police are investigating the supply of drugs into the Portsmouth music event, which is suspected to have led to the deaths of Tommy Cowan, 20 of West Leigh, and Georgia Jones, 18 also of Havant, on Saturday.
Following the probe, a 21-year-old woman from Waterlooville and 21-year-old man from Havant have been arrested on suspicion of being concerned in the supply of Class A drugs
They are currently in police custody, police have said.
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A spokeswoman added: ‘The 20-year-old man from Havant, 20-year-old man from Waterlooville and 22-year-old man from Cosham who were arrested on suspicion of being concerned in the supply of Class A drugs have been released from custody but remain under investigation.
‘Anyone who has information that they think might be useful to our enquiries should call 101.’