General Motors issued an apology to families of accident victims who were sent notices about the extensive recall of vehicles due to defective ignition switches.

2.6 million GM cars have been recalled to replace a defective switch that has been linked to at least 13 fatalities, though federal regulators now say they believe that the death count may be low. Families who lost loved ones in fatal crashes argue that it was insensitive for the manufacturer to send them notices to bring their cars in for the repair, reports Reuters.

"We are deeply sorry to those families who received a recall notice," GM spokesman Greg Martin told Reuters.

16-year-old daughter Amber Marie Rose was killed in a 2005 Maryland accident involving a Chevrolet Cobalt. Her mother, Terri DiBattista, told Reuters she received two recall notices from GM last week asking her to bring in the vehicle to fix the ignition switch and power steering. The car was destroyed when Rose crashed into a tree.

Rose has been identified as one of the 13 victims GM links to the faulty switch.