The Los Angeles Fire Department said: "We responded to a call at 2.54pm for an individual who was sick on a plane."
A source told People magazine: "She was met by paramedics at LAX as soon as her plane arrived. It looks like she had taken a combination of prescription medication with alcohol. We don't know what sort of prescription medications."
According to the site, an eyewitness claimed she began shouting: "He burns my private parts. He won't let me eat or drink. He beats me. He's going to kill me."
The flight was travelling from Cancun in Mexico to Los Angeles International Airport at the time, after she's believed to have visited to celebrate Father's Day with her ex-partner Jason Bleick and their son.
We have contacted Selma's reps for comment.
