A personal assistant convicted of killing and dismembering his former tech entrepreneur boss after stealing about $400,000 from him was sentenced Tuesday to 40 years to life in prison, Manhattan’s district attorney said.

Tyrese Haspil, 25, was found guilty in June of murder, grand larceny and other charges in the 2020 death of his former boss, Fahim Saleh.

Prosecutors said Haspil had been hired as an assistant for Saleh, whose ventures included a ride-hailing motorcycle startup in Nigeria, but quickly began to siphon money from Saleh’s businesses. Haspil resigned a year later but continued to steal money, even after Saleh discovered the theft and let Haspil repay him over two years to avoid criminal prosecution.

Haspil decided to kill Saleh over concerns that his former boss would discover he was continuing to steal from his companies, prosecutors said.