It was before the third injection Perry told him: “Shoot me up with a big one.”
The actor is said to have then told Iwamasa to start up the hot tub where Perry was later found dead with his head in the water after Iwamasa had run a set of errands.
Perry’s words were revealed as his stepfather Keith Morrison spoke out to say he hopes “unscrupulous suppliers of dangerous drugs will get the message” after five people were arrested in connection with the actor’s death.
In a statement issued to Entertainment Weekly, he said: “We were and still are heartbroken by Matthew’s death, but it has helped to know law enforcement has taken his case very seriously.
“We look forward to justice taking its course and we’re grateful for the exceptional work of the multiple agencies whose agents investigated Matthew’s death.
“We’re hoping unscrupulous suppliers of dangerous drugs will get the message.”
Perry’s doctors have also been accused of abusing their “position of trust”.
DEA administrator Anne Milgram said about the case: “Matthew Perry’s journey began with unscrupulous doctors who abused their position of trust because they saw him as a payday, to street dealers who gave him ketamine in unmarked vials.
“Every day, the DEA works tirelessly with our federal, state, and local partners to protect the public and to hold accountable those that distribute deadly and dangerous drugs – whether they are local drug traffickers or doctors who violate their sworn oath to care for patients.”