ARCADIA, Calif (AP) — Hall of Fame trainer Jerry Hollendorfer was banned by the ownership of Santa Anita on Saturday after a fourth horse from his stable died — and the 30th overall — at the Southern California track.

The Stronach Group, which owns the track, said in a statement that effective immediately Hollendorfer “is no longer welcome to stable, race or train his horses at any of our facilities”.

On the recommendation of a special panel convened to review horses’ medical, training, and racing history, the track’s stewards scratched four horses trained by Hollendorfer that were entered to run Saturday and Sunday.

A four-year-old gelding trained by Hollendorfer was injured Saturday while exercising on the training track and was euthanised. It was the first death of the meet on the training track, which isn’t used for racing.

It was the 30th death since the racing season began December 26. The track closes for the season Sunday.

The high number fatalities have led officials at Santa Anita and the California Horse Racing Board to initiate several measures to address horse and rider safety. The spate of deaths has drawn national political attention, including from Governor Gavin Newsom and US Senator Dianne Feinstein, D-California, who has called for racing to stop while training and racing conditions are inspected.

Hollendorfer couldn’t immediately be reached for comment.

However, he told the Daily Racing Form, “I’m training over 100 horses right now. Santa Anita didn’t want me to stay on the grounds. My opinion was that was a premature thing to do. I thought it was extreme. Now I have to step away for a while.”

The special panel rejected 38 horses that were set to run over the final six days of racing, according to the California Horse Racing Board. The panel was created last week at the direction of Newsom.

Hollendorfer has 7,617 winners from 33,519 starters, and purse earnings of US$199,737,768 in his career, according to Equibase.com.

He has three wins in the Breeders’ Cup and none in the Triple Crown races. His best finish with seven Kentucky Derby starters was third in 2017 with Battle of Midway. That colt sustained a fatal injury during a workout at Santa Anita on February 23.

Hollendorfer’s first horse to die at the meet was a four-year-old gelding on December 30 after a race on the dirt.

It wasn’t immediately known whether Hollendorfer will be allowed to race at Los Alamitos in Orange County when that meet opens June 29. A spokesman for Del Mar said the track was aware of Hollendorfer’s ban and was gathering information. Del Mar near San Diego opens July 17. Neither track is owned by The Stronach Group.

The racing board says a panel will also review horses entered to run at Los Alamitos.

A nine-year-old gelding named Kochees trained by Hollendorfer was euthanised on May 26 after injuring his left front leg in a race a day earlier.

At the time, a spokesman for The Stronach Group told The Associated Press that it was looking into whether new protocols were followed leading up to the gelding being euthanised.

The Stronach Group said, in a statement Saturday, it regrets that Hollendorfer’s record in recent months at both Santa Anita and Golden Gate Fields in Northern California “has become increasingly challenging and does not match the level of safety and accountability we demand”. Both tracks are owned by The Stronach Group; Golden Gate doesn’t resume racing until August 15.