The Special Investigative Unit is tasked with investigating financial crimes often referred to as "white-collar crimes." These types of crimes typically include such offenses as identity theft, forgery, counterfeiting, bank fraud, credit/debit card abuse, internet based financial crimes and intellectual property crime (violations of copyright and trademark law).

The Special Investigation Unit is also responsible for:

• Narcotics investigations through assignment with the Northeast Tarrant County Narcotics Task Force
• Traffic investigations (DWI, Hit and Run, Intoxication Manslaughter)
• Warrant services