(ASSOCIATED PRESS) An architect charged in a string of slayings known as the Gilgo Beach killings was accused Tuesday in the death of a fourth woman, a Connecticut mother of two who vanished in 2007 and whose remains were found more than three years later along a coastal highway in New York. Rex Heuermann was formally charged in the killing of Maureen Brainard-Barnes, months after having been labeled the prime suspect in her death when he was arrested in July in the deaths of three other women. In court, Heuermann wore a dark suit and did not say anything during the proceedings. He will continue to be held without bail. The judge set the next court date for Feb. 6. Heuermann has maintained his innocence from “day one” and looks forward to defending himself in court, attorney Mike Brown said. He entered a not guilty plea on the latest charges. Brown said he is still reviewing new information presented by prosecutors in court documents Tuesday morning. Prosecutors said Heuermann also searched the internet for phrases that suggested he was afraid of getting caught including “How does cell site analysis work,” “Gilgo news,” "How cell phone tracking is increasingly being used to solve crimes,” and phrases with the term “Long Island Serial Killer.” Suffolk County District Attorney Raymond Tierney and other law enforcement officials planned a news conference following Tuesday’s court hearing. Brainard-Barnes, 25, who was once employed as a dealer at the Foxwoods Resort Casino, left her hometown of Norwich, Connecticut, on July 9, 2007, and headed to Manhattan for sex work, with plans to return the following day, according to friends who became concerned when she uncharacteristically stopped using her phone. She never came back. Heuermann was arrested July 14 and charged with killing Melissa Barthelemy, Megan Waterman and Amber Lynn Costello, three women who authorities say also were sex workers. Heuermann’s lawyer said he has denied committing the crimes. He previously pleaded not guilty to killing Barthelemy, Waterman and Costello. Brainard-Barnes was the first of the four women to disappear. Their remains were found along the same quarter-mile (400-meter) stretch of parkway in the Gilgo Beach area of Jones Beach Island in 2010. Additional searching turned up the remains of six more adults and a toddler who was the child of one of the victims. READ MORE: https://www.13wmaz.com/article/news/nation-world/suspect-in-long-islands-gilgo-beach-serial-killings-charged-4th-murder/507-271ad6d1-fbc2-40e1-9ab6-a74260592b14