This fall, 21-year-old Sergey Lebedev, a Russian-born college student whose parents live in Mount Washington, was convicted of plotting the robbery of an Owings Mills acquaintance, a crime that ended with the execution-style shooting of 20- year-old Dimas Rodriguez.

On Monday, Lebedev was sentenced to 40 years in prison on felony murder, robbery and gun charges. That same day, a Baltimore County jury convicted one of his former Pikesville High School friends, 23-year-old Steven Bernard Parker, of murder. A third defendant, Irvin Patrick Browne, is to be tried early next year.

On the evening of Feb. 26, Rodriguez, his roommates and two other friends were studying and watching television in his apartment on Owings Heights Circle.

About 8:30 p.m., police said, two men wearing hoods and masks pushed their way into the home, threw a bullet on the table and pistol-whipped two of the men. The intruders took the cell phones and watches, herded the three into the bedroom, screamed at Rodriguez for money and asked about a safe.

After Rodriguez opened a safe in his closet, his friends said, the intruders started beating him, asking for more money. Then, inside the closet, one of the men fired a single shot through Rodriguez's back.

The two men, who prosecutors say were Parker and Browne, ran to a waiting car, which police say was driven by Lebedev.