Mel Gibson’s ex’s 12-year-old son to be interrogated

L.A. County Sheriff”s Department wants to interrogate the 12-year-old son of Oksana Grigorieva in connection with the Mel Gibson investigation.

They believe the boy has critical information about his mom”s volatile relationship with the actor.

According to sources, Alexander Dalton saw many of the blowups between them, both before and after the explosive January 6 showdown.

Dalton lived with Gibson and Grigorieva while they were together, and is considered “a very important percipient witness” to Sheriff”s investigators, reports TMZ.

It is also believed that though Alexander did not witness Gibson allegedly striking Grigorieva, he might have been in the vicinity, heard the argument and saw the aftermath.

Grigorieva will not try and prevent Sheriff”s investigators from interviewing him.