Thousand Oaks | Overdose Investigation leads to discovery of Illegal Firearms Activity on London Circle

Ventura County Sheriff Department – Incident Press Release

During the month of September 2018, Thousand Oaks patrol deputies responded to a fatal overdose in the 700 block of London Circle in the City of Thousand Oaks. Investigators with the Pharmaceutical Crimes Unit (PCU) conducted an investigation into the overdose death. During the course of their investigation, PCU investigators gained information about possible illegal firearms activity in the 700 block of London Circle.

Detectives with the Thousand Oaks Special Enforcement Unit (SEU) assumed the investigation into the illegal firearms activity. At the conclusion of their investigation, SEU detectives determined (S) Matthew Hansen had previously resided in the state of Washington and had obtained a semi-automatic assault rifle and pistol while living in Washington. Detectives determined Hansen returned to California with the semi-automatic rifle and pistol. Detectives also determined Hansen was storing those weapons at his residence, located in the 700 block of London Circle.

Detectives also determined (S) Donald Haile had been in possession of the previously mentioned firearms and had access to them while at Hansen’s residence. Haile was determined to be prohibited from owning or possessing firearms due to a prior felony conviction and misdemeanor domestic violence conviction.

SEU detectives obtained a search warrant to search Hansen’s  residence  and  seize  the previously listed firearms. On January 10, 2019, SEU detectives and deputies with the Thousand Oaks Police Department’s Directed Enforcement Unit served the search warrant at Hansen’s residence and located a CMMG MK4 semi-automatic assault rifle, a detachable drum magazine capable of holding up to 60 rounds of ammunition, several high capacity magazines, a CZ EVO

Scorpion 3 Pistol with high capacity magazine, approximately 250 rounds of .223 caliber ammunition and approximately 250 rounds of 9mm ammunition.

Detectives subsequently arrested Matthew Hansen for PC 30605(a) – Possession of Assault Weapon, PC 30600(A) – Import Assault Weapon, and PC 32310(a) – Possession of a Large Capacity Magazine. Detectives also subsequently arrested Donald Haile for PC 30605(a) – Possession of Assault Weapon, PC 29800(a)(1) – Possession of a Firearm by a Convicted Felon, and PC 30305(a)(1) – Possession of Ammunition by a Convicted Felon. Hansen was booked into the East County Jail for the listed violations, where his bail was set at $100,000. Haile was also booked into the East County Jail, where his bail was set at $65,000.













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