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Ben Panangian, 32, allegedly arrived by motorbike at his friend's Nusa Dua home on August 20 as police were raiding the address for drugs.
A police report says he tried to run from the scene and threw an item on the ground, which was found to be hashish.
When police searched the Kuta room he rents, they allegedly found more marijuana in his cupboard.
Corby, 37, is free on parole in Bali under the condition she stay away from drugs and crime.
Parole board boss Ketut Artha says officers will now watch the convicted drug smuggler more closely.
He may also personally warn her about the company she is keeping, but he will not revoke her parole.
"With this case, we will tighten supervision for her," he said on Friday.
"We will also warn her and visit her more often.
"Early next month she is due to report (to the parole office) and we will warn her."
Police said on Friday they had no plans to investigate Corby because the pair's relationship was unclear.
Corby's parole officer has also said she has never mentioned a boyfriend in her counselling sessions.
Corby met Panangian, a surfer, in Kerobokan jail.
He was freed before her but since her release in February, they have been photographed together in Kuta.
Panangian faces up to 12 years in jail if he is found guilty of drugs charges.