As more details continue to surface about the five adults charged with starving 11 children, the public is also learning more about one of the suspects, including ties to a bombing at the World Trade Center in the ’90s.

According to CBS News, Siraj Wahhaj’s father was on the list of people who “may be alleged as co-conspirators” to the 1993 World Trade Center bombing.

According to their investigative unit, Siraj Wahhaj, who also shares the same name as his son, has attracted the attention of authorities for years.

He’s the controversial worship leader at a mosque in Brooklyn, New York, which has attracted radical speakers over the years.

While he was never charged for the bombing at the World Trade Center, the elder Wahhaj played a key role in testifying as a character witness for Sheik Omar Abdel Rahman, a notorious “blind sheik,” who was convicted in 1995 for plotting terror attacks in the U.S.

As for his son, Wahhaj pleaded not guilty to 11 counts of child abuse in a Taos courtroom Wednesday.

Court documents also show that Wahhaj was teaching the children to commit school shootings, saying Wahhaj was conducting weapons training with assault rifles at the compound.

On top of that, Wahhaj also faces an additional fourth-degree felony charge after allegedly kidnapping his 4-year-old son back in December.