The authorities did not immediately suspect Chagra of involvement in the assassination, and it took thousands of man-hours to identify them as suspects in the case. His drug case went to trial and Chagra was found guilty in August 1979 and sentenced to 30 years.
Initially, authorities did not consider Chagra involved in the assassination, but it took considerable time and effort to establish his connection to the crime.  His drug-related case resulted in a conviction in August 1979, leading to a 30-year prison sentence.