Police in Phoenix say they have arrested a suspect in connection with the Arizona Canal killings, which happened more than 20 years ago.

Bryan Patrick Miller has been arrested in connection with the murders of 22-year-old Angela Brosso and 17-year-old Melanie Bernas in 1992 and 1993. Both women were riding their bikes when they disappeared.

At the time, authorities collected the two victims’ DNA, but police did not have sophisticated DNA capabilities yet. Then, in 1999, new technology linked the two women’s deaths.

Miller was questioned in 1994, but was cleared. Authorities recently took a closer look at Miller, doing undercover work to obtain a DNA sample from him. Investigators then analyzed his DNA and found that it linked him to both murders.

Miller lived in the vicinity of the killings back in the ‘90s, moved away for 15 years, and then moved back with his teen daughter. Neighbors describe Miller’s behavior as odd; he drives an old police car, has a bumper sticker that says “Zombie Hunter,” and is a hoarder. Authorities pulled a rusted bike from his property, and it’s unclear if it belongs to one of the victims. Neither bike was ever found.