Three men have been charged with murder in the October death of an 87-year-old man found in his North Arlington home. One of the suspects is the man’s son, police said.

On Monday, police in Tampa arrested Mack Leon Wood Jr., 47, in the death of his father, Mack L. Wood Sr. Also arrested were Jean Caleb Pierre, 32, and Sapien Edmonds, 29, both of Henrico.

When the elder Wood was found in his home in the 3700 block of North Wakefield Street on Oct. 13, police said his death was suspicious but did not say why. The younger Wood had found him in the house and called authorities to report the death, police said.

Arlington police still decline to say why Mack’s death is suspicious or how he died.

The death brought Arlington’s 2012 homicide total to five.

Mack Leon Wood Jr.

Arlington police spokesman Dustin Sternbeck said the three suspects knew each other from living in Henrico. Wood Jr. was “acquaintances” with Pierre and Edmonds, Sternbeck said.

Wood Jr., Pierre and Edmonds are being held without bond, police said. Wood Jr. is in Tampa and is expected back in Virginia in the coming days.

Wood Sr., a retired Marine who worked as an engineer at the Navy Yard, lived in his house for 46 years, according to neighbor Frances Zink.

Zink, who lived next to the Woods for 42 years, said Wood Sr. and his late wife, Ellie, adopted their two children, a son and a daughter. She said Wood Jr. is divorced and has one son.

Zink said she did not see Wood Sr.’s son and daughter around much in recent years.

Wood Sr. was devoted to his wife, visiting her each day in a nursing home until she died of Alzheimer’s several years ago, Zink said.

Wood Sr. owned several apartments around Arlington after his retirement and “took care of them himself,” Zink said. Until recently, he also used to paint and garden at his home, she said. A native of North Carolina, Wood Sr. also owned properties there.

Zink said Wood Sr. recently underwent an operation and began walking with a cane.

His son has a criminal history that includes an arrest for grand larceny last April and changing the price tag on an item in 2010, according to online court records.

Edmonds’s criminal history includes grand larceny and possession of marijuana, records show.