(CNN) -- Police will ask prosecutors to press unspecified charges against the teen driver in last month's car crash that killed two 18-year-old passengers in Gary, Indiana, a spokesman said Wednesday.
Darius Moore, 17, may face charges in the tragic case that has pit police against grieving families.
Cmdr. Sam Roberts said Gary police will ask the Lake County prosecutor to charge Darius Moore, 17, who lost control of his car on September 15 and ran into a ravine, killing his friends Dominique Green and Brandon Smith.
Police who responded to the crash failed to find victims' bodies. Smith's father found them himself when he visited the site hours later.
Moore said he and the other crash survivor, DeAndre Anderson, begged police to search for their friends who were missing after the crash.
"This investigation is ongoing, and more information has come in and we intend to press charges against the driver at the very least," said Roberts, who would not reveal what charges police were seeking.
Blood-alcohol tests after the accident showed that Moore and Anderson, 17, registered .05 percent and .09 percent. Because the teens are minors, police refused to reveal which result was Moore's. Moore has denied that anyone in the car had been drinking before the accident.
"It's not his fault," said Moore's mother, Carmelita Evans, on Wednesday. "If he was at .09 alcohol level they would have arrested him by now."
Indiana, which has a legal drinking age of 21, has a legal blood alcohol threshold of .08 percent.
On Monday, Green's parents Willie and Jacquelyn Green announced they were filing a $50 million negligence lawsuit against the city of Gary and its police department. The Greens are disputing a coroner's finding that the teens died instantaneously. They believe their son was still alive immediately following the crash. 
Watch Jacquelyn Green's emotional explanation of her lawsuit »
The office of Mayor Rudy Clay has referred all questions about the case to Gary corporate counsel Hamilton Carmouche, who told CNN on Wednesday that the city has not yet been served in the suit. "I have not seen anything yet. When we see the lawsuit, we'll deal with it."
Evans said she wasn't surprised police were recommending charges against her son. "I figured the police would try to go after him in light of the lawsuits that are coming at them," she said. "Because the police are going down, I figured they would try to take my son with them."
Facing charges, Evans said, might put her son "over the edge -- that he could be liable for his friends' deaths. He's not sleeping, he's not eating properly. I hope this doesn't cause him to do something. I'm trying to seek counseling for him, but I'm a single mother and I don't have a lot of money."
Police internal affairs investigators are wrapping up their investigation into the case, Roberts said. Also, the Lake County Sheriff's Office has completed an independent review of the accident report, Roberts said, although Gary police are not ready to make it public.
Roberts said Wednesday that no police officers have been suspended or reprimanded.
Police identified two additional officers who responded to the crash: Officers Joseph Gallagher and Justin Sawicki. 
Listen to audio of the police recordings »
They were among at least seven police who responded to the late-night accident, which Moore said began when a tire blew out. Police had already named Cpl. Jeffery Westerfield. See timeline and map of teens' route »
Moore's 1994 Chevy Caprice jumped the median, crashed through a guardrail and slammed into a ravine, flipping several times. None of the teens was wearing a seat belt, according to both police and Moore.
Police have said Moore and Anderson may have told authorities at the scene they had dropped off Green and Smith before the crash, prompting authorities to suspect the missing teens weren't at the accident site.
"I never told them that I dropped them off," Moore said, "and DeAndre never told them that either."
Police radio dispatch tapes released last month revealed officers discussed the possibility that Smith and Green might be at the scene.
Moore said police "didn't look for them. They didn't see them. They didn't go down there to look to see if they were down there."
The Smith family is having an independent autopsy conducted of Brandon's body, from which results are expected soon. The Lake County coroner has not made public its results of toxicology tests on the bodies of Green and Smith.
Smith's father, Arthur Smith, is demanding the resignation of both Gary Police Chief Thomas Houston and Mayor Clay. Houston has offered his condolences to the victims' families in a public statement. E-mail to a friend 
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