A District Heights man was convicted Monday of conspiring to commit three armed robberies of delivery trucks hauling Apple products to area stores and faces at least seven years in prison, federal prosecutors said.

Khalil Kenyon Blackman, 31, was convicted in the robberies of truck drivers that occurred in February and October of 2011 in Prince George’s County and in June 2011 in Fairfax County, according to prosecutors in Alexandria with the U.S. Attorney’s Office for the Eastern District of Virginia.

The loss to Apple was more than $130,000, court records show.

After a bench trial before U.S. District Judge Leonie M. Brinkema, Blackman was convicted of conspiracy to commit robbery, which carries a maximum penalty of 20 years, and brandishing a firearm, which carries a mandatory minimum sentence of seven years.

In related cases, court records show that a former employee of the company that delivered the products was part of the conspiracy and was sentenced in 2012 to 10 years in prison. A third man who took part in the robberies also received a 10 year prison sentence in 2012, court records show.

The Virginia robbery involved a staged car accident in which conspirators used their car to strike the delivery truck in a parking lot of the Fair Oaks Mall, then pointed a gun at the driver when he left his truck to look at the accident damage, court files show. The driver was blindfolded and bound before his truck was driven a few miles away and robbed of the Apple products, according to the court records.

In another of the Maryland robberies, court files show the thieves waited in bushes outside a warehouse until a tractor truck loaded with Apple products approached with a delivery, then robbed it and carted off the goods in a van they had rented.