Former Pagan’s Motorcycle Gang Member Sentenced to 80 Months for Assault Against Rival

KANSAS CITY, Mo. - A former member of the Pagan's Motorcycle Club was sentenced in federal court today for his involvement in an assault against a member of a rival motorcycle club.

Mark A. Crump, also known as "Navajo," 55, of Lee's Summit, Mo., was sentenced by U.S. District Judge Greg Kays to 80 months in federal prison without parole for assault resulting in serious bodily injury in aid of racketeering.

On July 20, 2023, Crump, Jarrid A. Hammer, and Mark A. Cottman assaulted a lone rival motorcycle gang member at a bar & grill in North Kansas City, Mo. Hammer told the victim that they were there to shut the victim's club down, then flipped a table over knocking the victim to the ground. Once on the ground, Hammer, Crump and Cottman began stomping, kicking and punching the victim. The victim later told law enforcement that those who assaulted him were wearing steel-toed boots. Crump, Hammer and Cottman fled the bar & grill before any law enforcement arrived. The victim was later transported by ambulance to a local hospital, suffering from a head contusion (bruise on the brain), rib fracture, hemothorax (accumulation of blood in the area between the chest wall and lungs), a left pulmonary contusion (bruising of the lung), pneumothorax (collapsed lung) and a traumatic brain injury.

Hammer pleaded guilty to the assault on June 18, 2025, and Cottman pleaded guilty on Nov. 4, 2025. Both are awaiting sentencing.

This case is being prosecuted by Assistant U.S. Attorneys Bradley K. Kavanaugh and Robert Smith. It was investigated by the FBI, the Independence, Mo., Police Department, the Blue Springs, Mo., Police Department, Homeland Security Investigations, and the Kansas City, Mo., Police Department.

Homeland Security Task Force

This prosecution is part of the Homeland Security Task Force (HSTF) initiative established by Executive Order 14159, Protecting the American People Against Invasion. The HSTF is a whole-of-government partnership dedicated to eliminating criminal cartels, foreign gangs, transnational criminal organizations, and human smuggling and trafficking rings operating in the United States and abroad. Through historic interagency collaboration, the HSTF directs the full might of United States law enforcement towards identifying, investigating, and prosecuting the full spectrum of crimes committed by these organizations, which have long fueled violence and instability within our borders. In performing this work, the HSTF places special emphasis on investigating and prosecuting those engaged in child trafficking or other crimes involving children. The HSTF further utilizes all available tools to prosecute and remove the most violent criminal aliens from the United States. HSTF Kansas City comprises agents and officers from the Federal Bureau of Investigation, the Department of Homeland Security, U.S. Immigration and Customs Enforcement, Homeland Security Investigations, the Bureau of Alcohol, Tobacco, Firearms & Explosives, the Drug Enforcement Administration, the United States Marshals Service, the United States Postal Inspection Service, and the Internal Revenue Service - Criminal Investigation Division with the prosecution being led by the United States Attorney's Office for the Western District of Missouri.