As Boston Police continue to investigate Amy Lord’s abduction and murder, a Boston detective has been demoted after it came to light that he neglected to follow up with a crime last fall that may have involved a person of interest in Lord’s case.

In September 2012, a woman was attacked in Boston and allegedly grabbed the wallet of her attacker. Inside the wallet was identification card that belonged to Edwin Alemany. Alemany, 28,  is currently being charged with the attack of two other woman in South Boston last week, and is now a person of interest in Lord’s murder investigation.

Boston Police found that detective Jerome Hall-Brewster did not follow up with Alemany regarding the September 2012 attack, and along with a series of other missteps, reports Boston.com. It was announced on Monday evening that Hall-Brewster has since been stripped of his detective ranking.

“I’m very disappointed in what the detective did in this case,” Boston Police Commissioner Ed Davis said at a press conference on Friday. “I would hope that a more thorough and aggressive stance … is something that we would pursue in a case like this.”

Around 5 a.m. on Tuesday, July 23rd, Lord was allegedly kidnapped in South Boston on her way to the gym, after which her bank account was accessed from five different ATMs in the area. She was then allegedly stabbed to death, and her body was found later on Tuesday afternoon in Hyde Park’s Stony Brook Reservation.

Lord was a 24-year-old South Boston resident and Wilbraham, Mass. native. She graduated from Bentley University in 2011 and worked at Genuine Interactive, a creative agency in Boston.

Hundreds attended Lord’s wake on Monday in Springfield, Mass. Funeral services are scheduled for Tuesday.