Three accused grave robbers have been arrested after authorities say they stole 400 brass vases last month from a North Harris County cemetery and cashed them in as scrap metal.

Doyle Aaron Glover, 71; Daniel Lee Stevens, 36; and Tawny Maryssa Watson, 21, were taken into custody.

They were among several people wanted in the overnight heists at Brookside Memorial Park, a 290-acre cemetery at 13401 Eastex Freeway.

Each has been charged with second-degree felony theft, which carries a punishment of two to 20 years in prison.

Detectives are still looking for Crystal Diane Nichols, 30; Lloyd Darrell Petty, 42; and Robert Wayne Conley, who turns 23 today.

Charges have been dropped against Shannon Don Tucker, who also was named as a suspect in the case Monday at a news conference.

The 32-year-old has been incarcerated in state prison for nearly three years, Texas Department of Criminal Justice spokesman Jason Clark said.

Detectives discovered that "it would not have been physically possible for him to be a participant in this case," said Christina Garza, a spokeswoman for the Harris County Sheriff's Office. "Investigators believe that his ID was used by one of the other suspects … when selling the scrap metal."

cindy.george@chron.com