The man charged in the fatal shooting of Alexandria activist Lenny Harris was ordered held without bond Wednesday, as Prince George’s County homicide detectives continued their search for other suspects, authorities said.

Linwood Johnson is a suspect in the slaying of Lenny Harris. (Courtesy of Prince George's County Police Department)

Detectives are still working to unravel the mystery that began when Harris mysteriously vanished in September, but with Johnson’s arrest, they have started making significant progress. Detectives have determined Harris was shot and killed before he was dumped in the well on a vacant property in the 11900 block of Old Fort Road, and those who attacked him first set out to rob him. It remains unclear, however, exactly why he was targeted and exactly what Johnson’s role in the crime was. Police have said the men were “known to each other,” and detectives are searching for other suspects.

Efforts to reach Johnson’s family Wednesday were unsuccessful, and a spokeswoman for the Prince George’s State’s Attorney’s Office said no one came to speak on his behalf at the bond hearing.

Court records show Johnson was convicted in 1988 of attempted robbery with a deadly weapon and sentenced to eight years in prison. In that case, court records show, Johnson was accused of shooting and wounding a security guard as he and another man tried to rob a Chillum drug store.

In recent years, though, Johnson has been charged with mostly minor offenses — some of which have been dropped, court records show. In Prince George’s, he is currently charged with selling counterfeit DVDs outside a Temple Hills gas station. He told officers that he was selling the DVDs, for $5 each, to “try and make a little money,” according to police charging documents.