Amid conflicting reports about her condition, actress Natasha Richardson's family has reportedly gathered by her side at a New York hospital following a skiing accident that resulted in a serious head injury.

E! Online reported that Richardson is in critical condition following the accident, which took place Monday afternoon in Montreal. The site reported that friends and family gathered that evening for what was described as a "vigil" in New York City, where Richardson, 45, and her husband, actor Liam Neeson, live with their two adolescent sons.

While Lenox Hill Hospital could not confirm that Richardson was being treated there, the actress' Oscar-winning mother, Vanessa Redgrave, was reportedly seen entering the building. CNN reported that the actress' sister, "Nip/Tuck" star Joely Richardson, was also pictured arriving at the hospital on Tuesday.

There were widely varying reports, many unconfirmed, on Tuesday about Richardson's condition, some of which described the brain injury as severe. Richardson reportedly fell during a private ski lesson on a beginner's slope at the Mont Tremblant ski resort, walking away from the fall without any visible injuries.

But a spokesperson for the resort said that after being escorted back to her hotel room by a member of the ski patrol, the "Parent Trap" actress reported that she was not feeling well and was taken to a local hospital. The couple's 12- and 13-year-old sons were reportedly with her at the time of the accident, during which she was not wearing a ski helmet.

Richardson was transferred to a bigger hospital in Montreal on Monday, then to an undisclosed facility in New York, where doctors and spokespeople have yet to give an update on her condition.