The family of a Marine veteran who died from a toxic mix of more than a dozen drugs at a U.S. Veterans Affairs facility in Tomah, Wisconsin, has filed a wrongful death lawsuit against the U.S. government.

The federal lawsuit alleges VA caregivers improperly prescribed and administered drugs to Jason Simcakoski, who died in 2014. It also alleges the VA failed to provide adequate emergency care for Simcakoski when he was found unresponsive and failed to adequately diagnose his mental health and substance abuse problems.

The lawsuit filed Monday by Simcakoski's wife seeks unspecified compensation.

Neither a Justice Department attorney listed in court documents nor a VA representative could be immediately reached for comment.

Last year, the VA's inspector general ruled that deficiencies in care led to Simcakoski's death. One physician was fired.