This week, nearly 30 retired New York City firefighters and police officers have been arrested for falsely claiming Social Security benefits in the wake of the September 11 attacks on the World Trade Center.

The news comes on the heels of over 100 arrested retired firefighters and police officers in January,  as a result of a wide-ranging pension fraud investigation. Retirees allegedly lied about their mental and physical abilities in order to qualify for Social Security benefits they would not have received otherwise.

Of the 106 originally arrested, 80 are believed to have claimed to suffer from severe mental and emotional trauma at Ground Zero on September 11, even though some of them were never at the scene.

This week, 28 more retirees have been arrested on similar disability fraud charges – 16 former police officers, four firefighters, and a New York City Department of Corrections worker.

“The idea that many of them chose the events of 9/11 to claim as the basis for their disability brings further dishonor to themselves,” New York City Police Commissioner Bill Bratton said, according to the news service.

Investigators believe that there may be more arrests made in coming months and  up to $400 million in taxpayer funds could have been stolen.

According to the New York Post, many of the retirees claimed they couldn’t sleep, work, drive a car, or even leave their homes as a result of their disabilities, only for investigators to find they were flying helicopters, riding on jet skis, leading martial arts classes, and more. Some former officers claimed mental handicaps even while holding gun permits.

Investigators also claimed that four of the people involved were coaching retirees on how to qualify for disability benefits. In exchange, these ringleaders allegedly received kickbacks to the tune of 14 monthly Social Security checks per person they successfully enrolled into the program.