Liam Neeson calls instructor who was with wife Natasha Richardson during fatal fall

Liam Neeson Natasha Richardson

during the skiing accident that led to her death.

A source at Quebec's Mont Tremblant resort told the UK Sun newspaper: "He was very dignified and never sought to blame anyone — he just wanted to understand what happened for his own peace of mind."

The "Schindler's List" star, 56, talked at length about his wife's last days as well as the accident to the unnamed instructor.

Richardson, 45, who was learning to ski, fell on a bunny slope at the resort on March 16. She initially refused treatment, but when she was taken back to her hotel room she started suffering headaches and was taken to to a local hospital.

Neeson rushed to her side and had her transported to New York City, where friends and relatives said their last goodbyes before she died on March 18.

The New York City medical examiner's office concluded that the actress — who had two sons with Liam — died of blunt impact to the head.