An official religious watchdog in the Muslim-majority country also said it was sending personnel to Kuala Lumpur International Airport (KLIA) to prevent further occurences.
The rituals, captured in photos and videos that went viral and sparked ridicule for adding a farcical element to the grave situation, were staged this week by self-described faith healer Ibrahim Mat Zin.
On Wednesday, Ibrahim, 80, directed three assistants wearing business suits to sit on a tapestry as they lifted objects including large green coconuts over their heads.
Occult activities are banned by religious authorities in Malaysia as "un-Islamic" but many people still consult "bomohs" or shamans to seek supernatural help in personal matters and health issues.
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Malaysia Airlines flight 370 went missing early on Saturday with 239 people aboard. A huge international search has failed to turn up any concrete sign of the plane's fate.
In another incident on Monday, Ibrahim's assistants held a traditional wooden fish trap in the air while he looked at it through two bamboo poles in a rite intended to seek clues to the plane's whereabouts.
A spokeswoman for an official watchdog in charge of policing Islamic practices confirmed to AFP its personnel were now patrolling the airport to prevent more such rituals. She declined further comment.
National news agency Bernama quoted a religious department official Hardi Sadali as saying: "We have advised (Ibrahim) not to perform the rituals like the ones he performed. If he persists, we will take action."
A YouTube video of the fish-trap ritual received more than 300,000 hits.
As in many parts of Asia, a belief in the supernatural remains widespread in Malaysia, a vestige of its pre-Islamic times hundreds of years ago.