Three of those in Anna Nicole Smith’s most-trusted circle pleaded not guilty Wednesday to conspiring to provide the drugs that killed her in 2007, people.com reports.

Howard K. Stern, 40, Smith’s lawyer-boyfriend, her physician Sandeep Kapoor, 40, and Smith’s neighbour and psychiatrist Kristine Eroshevich, 61, entered the pleas before Los Angeles Superior Court Commissioner Kristi Lousteau, who ordered the three back on June 8 to set a summer date for a preliminary hearing.