( CNN ) -- Organs donated by a slain Oakland , California , police officer saved four lives , and his donated tissue will enhance the lives of up to 50 others , the California Transplant Donor Network said Wednesday . Officer John Hege was one of four police officers fatally shot Saturday in Oakland , California . Officer John Hege , 41 , was pronounced brain dead on Sunday but was kept on life support pending a decision on organ donation . He was the fourth Oakland officer to die after a gunman fired on police in two weekend incidents . `` Officer Hege was registered on the Donate Life California Organ and Tissue Registry , which his family also supports , '' the donor network said in a news release . `` He chose in death as he did in life to help those in need . His organ donations saved the lives of four adult males from California . '' Hege 's liver , kidneys and heart were donated , the network said , and the transplants were successfully completed Tuesday and early Wednesday . In a written statement , Hege 's family said , `` Our son John never met a stranger . '' `` John 's courage and strength was enhanced by his ability to perceive the realities of life , '' the family said in the statement . `` In June 2008 , he registered on the Donate Life California Organ and Tissue Donor Registry . We completely and proudly support his decision , and it gives us a great deal of comfort to know that four individuals have received the gift of life because of our selfless and beloved John . `` Even in death he gave to the lives of those in our community whom he had always loved and supported . '' Hege had been with the Oakland police force about 10 years . The man accused of shooting the officers -- Lovelle Mixon , 26 , of Oakland -- was fatally shot in a gun battle with SWAT officers in an apartment complex where he was hiding , police said . Authorities said Saturday night that Mixon had an extensive criminal history and was in violation of parole for assault with a deadly weapon . The incidents began about 1 p.m. Saturday in east Oakland , when two motorcycle officers tried to pull over a car for a `` fairly routine traffic stop , '' said Dave Kozicki , deputy police chief . Emergency dispatchers received reports that two officers had been shot and needed help , he said . Those officers were Hege and Sgt . Mark Dunakin , 40 , an 18-year veteran of the force . Dunakin died Saturday . Police launched an intense manhunt to track down the gunman . An anonymous caller directed authorities to a building on an adjacent street where the man was believed to be barricaded , acting Police Chief Howard Jordan said . The gunman fired on SWAT officers who entered the apartment , hitting two of them before police shot and killed the man , Jordan said . Those two officers -- Sgt . Ervin Romans , 43 , and Sgt . Daniel Sakai , 35 -- died . Police said Romans had been with the department since 1996 and Sakai since 2000 . A fifth officer who was grazed by a bullet was treated at a hospital and released , police spokesman Jeff Thomason said Saturday .
Hege , three other California police officers fatally wounded over weekend . Officer was brain dead over weekend , kept on life support pending organ decision . Hege 's organs saved lives of three men , donor network says . John Hege 's family : Knowing donations helped others `` gives us a great deal of comfort ''