HOUSTON (AP) _ A man who Houston police say told them he has given thousands of silicone injections has surrendered after being accused of injecting silicone into a transgender woman who died after it leaked into surrounding tissues. Allan David Gibson, 49, turned himself in at the Houston Police Department’s downtown headquarters Thursday, police said. He has been charged with aggravated assault with a deadly weapon based on the Aug. 17 death of David Harold Reese Jr., 31, who died days after the silicone entered her tissues, blood and lungs. Police told the Houston Chronicle in Saturday’s editions that Gibson could not recall if he had provided Reese with injections “because he does so many,” the police complaint states. The injections are used by some transgender people to enhance body parts without the side effects or costs involved in hormone therapy. Gibson gave a statement in which police say he admitted regularly injecting transgender individuals. Robert Turner, a lawyer representing Gibson, did not immediately return a message left by The Associated Press on Saturday. Two transgender women, besides Reese, have died in recent months after receiving illegal silicone injections from people without medical licenses, police have said. The police department’s major offender’s division learned of the practice in May after the death of Delfino Gonzalez, 22. Guadalupe Camarena, 32, who lives as a woman, was charged last month with aggravated assault for injecting silicone into Gonzalez, who died days after receiving the injections. Camarena is free on $50,000 bond. The Harris County Medical Examiner’s determined that the silicone found in Gonzalez’s bloodstream was industrial strength, which is not sterilized like injectible liquid silicone and approved by the Food and Drug Administration in only a handful of controlled clinical trials, spokesman Rudy Flores said. Another transgender woman, San Chiem, 35, died on July 22 and silicone injections are suspected in her death as well.