Surgeon, registered sex offender among 8 arrested in child predator sting 'Back to School III'

HOUSTON – Eight people, including a surgeon and a registered sex offender, were arrested after a multiday operation to crack down on online sexual predators targeting children. 

The Houston Metro Internet Crimes Against Children Task Force conducted the initiative under the leadership of the Harris County Precinct One Constable's Office and Houston Police Department. 

The operation was called "Back to School III."

Undercover officers chatted with the predators using online personas in various social media apps. They were posing as minors.

Those who were arrested thought they were talking to underage children, investigators said.

Here's a look at those who were arrested in the sting:

Patrick Ryan Craig - registered sex offender

  • 37 years old
  • Bond $100,000.00 - POSTED BOND
  • Owner of Bullritos Restaurant- Spring, Texas
  • Prior History for Attempted Sexual Performance by Child (Harris County)
  • Sentenced to 8 Years TDC in 2005 and was paroled in 2013

Pablo Feliz Estrada

  • 24 years old
  • Bond $10,000.00 - POSTED BOND
  • Cashier at Walgreens-Houston, Texas

Gerald Jamal Colomb

  • 34 years old
  • Bond $ 20,000.00 – POSTED BOND
  • Claims to be a self-employed chef who owns/operates his own food truck in the Houston area
  • Claims to volunteer coaching for football/basketball games for his kids in the Houston area

Nicholas Cosby

  • 37 years old
  • Bond $20,000.00
  • Warehouse worker
  • Prior Arrests for Assault/Assault Family Violence/POM/Possession-sale unlabeled record-unknown dispositions

Marcial Ramirez

  • 38 years old
  • Bond $15,000.00 - POSTED BOND
  • Works as a temporary employee in a warehouse in the Houston area.
  • Prior Arrests for Possession of Dangerous Drugs in Harris County/unknown case disposition

Shawn Paul Robinson

  • 38 years old
  • Bond $15,000.00 - POSTED BOND
  • Employed at UTMB as a surgeon
  • From Pittsburgh, Pennsylvania here on a fellowship for heart specialization

David Arellano

  • 31 years old
  • Bond $15,000.00 - POSTED BOND
  • unemployed

Williard Billings

  • 77 years old
  • BOND REVOCATION for being back online/on social media - New Bond is NO BOND
  • Chatted on the same social media platform with the same UC he chatted with when arrested
  • Retired
  • Former Military
  • No history with exception of arrest for Online Solicitation of a Minor March 2019