Parents of a teen who died after guards roughed him up at a boot camp want seven guards added as defendants in their federal civil lawsuit, a lawyer said Friday.

In an amended complaint, lawyer Ben Crump included guards Henry Dickens, Charles Enfinger, Patrick Garrick, Raymond Hauck, Charles Helms, Henry McFadden and Joseph Walsh to the lawsuit, scheduled to go to trial April 16.

Crump said he wanted to avoid naming guards individually and together, but has been forced to by refusal from either the Bay County sheriff or state Department of Juvenile Justice to accept any of the responsibility for Martin Lee Anderson's death in early January.

Martin Lee Anderson's parents sued in July, seeking more than $40 million from the juvenile justice agency, which oversaw the boot camp program, and the sheriff's office, which ran the camp.