LOS ANGELES (CBSLA.com) — Detectives say a man charged with 10 felony counts of rape and sex-related crimes may have more victims.

Ronald Douglas, 33, was arrested on March 5 and booked on suspicion of raping a 40-year-old woman, according to the Los Angeles County sheriff’s officials said.

(credit: Los Angeles County Sheriff’s Department)

Ten felony sexual assault-related counts — including forcible rape, forcible oral copulation, attempted sodomy by use of force and false imprisonment by violence — were filed March 7 against Douglas, who is being held on $2 million bail, according to the sheriff’s department. He is scheduled to appear in court Friday.

During the investigation in connection with Douglas’ March 5 arrest, “DNA evidence revealed that suspect Ronald Douglas was linked to a 2015 case where he is suspected of sexually assaulting a 37-year-old female,” sheriff’s officials said in a statement.

Both rapes happened in Norwalk. Sgt. Marvin Jaramillo of the Special Victims Bureau says there’s a similarity to the alleged rapes. “He’ll befriend the victim, he’ll offer to give them a ride home or he’ll offer to walk them home,” Jaramillo said. “subsequently he’ll take them to a secondary location  and unfortunately sexually assault them.”

Anyone with information on the case or Douglas can call the sheriff’s Special Victims Bureau at (877) 710-5273 or email specialvictimsbureau@lasd.org.

(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. City News Service contributed to this report.)