Nick Reiner has been taken into custody as a suspect in the murder of his parents, actor-director Rob Reiner and Michele Singer Reiner, and has been formally booked on murder charges, Los Angeles Police Department chief Jim McDonnell said on Monday, Reuters reported.

Nick, 32, was taken into custody Sunday night, and jail records show his bail has been set at $4 million.

The jail records initially listed Nick as being accused of “gang activity,” but provided no further details.

LAPD chief Jim McDonnell described the deaths of Nick Reiner’s parents as “very tragic” and said investigators “worked throughout the night on this case” before making the arrest.

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