Mel Gibson and Oksana Grigorieva's relationship allegedly imploded during a tree-planting ceremony for their young daughter.
Tensions between the couple reportedly reached their conclusion on February 18, when the pair invited close friends and family members to their mansion in Malibu, California, to celebrate the arrival of baby Lucia - then aged three months - by planting a tree in her honour.
However, a source told RadarOnline.com the 'Braveheart' actor lost his temper during the day, and accused the Russian singer of "smiling too much" while talking to one of the male gardeners.
Just hours later, at approximately 6pm, Oksana took baby Lucia and left the lavish home and moved to one of Mel's other homes in Sherman Oaks, Los Angeles.
Mel - who has been accused of domestic violence against Oksana - faces a criminal investigation on domestic battery charges by the Los Angeles County Sheriff's Department and is part of a Department of Children and Family Services investigation, which is looking into claims Mel left Lucia bruised and hit Oksana while she was holding her.
