A 19-year-old Alexandria man accused of stabbing his victim during a break-in that netted $ 20 in cash, a television and a radio was convicted yesterday of first-degree murder and sentenced to life in prison.

Alexandria Circuit Court Judge Albert H. Grenadier also imposed sentences of five and 10 years on statutory burglary and robbery counts on the defendant, Demetrius Arnell Odom of 2819 Mosby St.

Grenadier ordered that the two lesser prison terms run concurrently with Odom's sentence for murder. Assistant prosecutor Stephen Randolph Sengel said Odom will be eligible for parole in about 15 years.

Police charged Odom and two young accomplices broke into the ground floor apartment of Rodney Sanford Lloyd, 51, at 402 Four Mile Road in the city's Arlandria section on the morning of March 4 intending to steal his monthly Social Security check.

Lloyd, who lived alone, was stabbed twice in the throat with a kitchen knife and crawled to his bed before dying, police said. They said the intruders found only $ 20 in Lloyd's wallet, which they took along with the TV and radio.

Lloyd's body was found five days later after the resident manager alerted police.

Odom was arrested in July at the Alexandria City Jail, where he already was in custody on a concealed weapons charge. A transcript of a police interview in which Odom acknowledged participating in the break-in and slaying was entered as evidence in yesterday's nonjury trial.

A 14-year-old girl accused of taking part in the incident was convicted earlier as a juvenile and has appealed her case to circuit court. A second defendant, Gary Clawson, who was 17 at the time of the break-in, is scheduled to be tried as an adult next month on burglary and robbery charges, Sengel said.