Miami Gardens Police say they've arrested a man in connection with the brutal murders of a woman and her grandson earlier this month and they're looking for another man who may be involved.

Reginald Louis Jackson, 28, has been arrested and charged in the July 16 murders of Annette Anderson, 70, and Anderson's 20-year-old grandson, Tyrone Walker Jr., police said Wednesday.

He's charged with two counts of first-degree murder, two counts of kidnapping and two counts of armed robbery. He was being held without bond Wednesday and it's unknown whether he has an attorney.

Jackson's criminal history includes armed robbery, possession of a firearm by a convicted felon, aggravated battery with a deadly weapon, domestic violence, battery, burglary, grand theft, grand theft auto, carrying a concealed weapon and larceny, police said.

Police found the bodies of Anderson and Walker in a home in the 3400 block of Northwest 207th Street after receiving a call to do a welfare check from a neighbor who hadn't seen Anderson in quite some time.

It appeared as if the bodies had been there for a few days, police said. Relatives said they had been tied up, blindfolded and gagged before they were tortured and executed.

Anderson had been a minister at Jesus People Ministries in Miami Gardens and more recently had held Bible studies in her home. Walker had just moved from Jacksonville to Miami a few months ago to study computer science at ITT Tech, family members said.

A second man is being sought in the killings. Anyone with information is asked to call Miami-Dade Crime Stoppers at 305-471-TIPS.