ELIZABETH, NJ -  William Parisio, 25, awaiting trial for the murder of Warren Township woman Pamela Schmidt, died in the Union County jail, according to authorities.

According to the Union County Prosecutor's Office, the cause of his death is under investigation.

In March 2011, Parisio was charged with killing his girlfriend Pamela Schmidt at his home in Cranford. Authorities said Parisio struck Schmidt with a 12-pound dumbbell and strangled her.
 
 
Gov. Chris Christie signed "Pamela's Law" in August 2011 outlawing bath salts. 
 
After his arrest, Diane Parisio said her son had used bath salts, which are  powerful stimulants that are known to cause severe psychotic episodes. The toxicology reports released by the Union County Prosecutor's Office a month after the law was signed revealed that there was no trace of bath salts in Parisio's system.