Vancouver police are taking a second look at the 1999 murder of teenager Poonam Randhawa, and say more charges could be on the way.

The 18-year-old student was killed by a single shot to the head as she was driven away from Sir Winston Churchill Secondary during a lunch break on Jan. 26, 1999. Her ex-boyfriend Ninderjit Singh was arrested in California last week on a charge of first-degree murder after a 12-year manhunt.

Now that Singh is finally behind bars, investigators are re-opening the case files in the murder investigation.

"There was only evidence at the time to lay a single charge against Singh. We are now re-examining the case in its entirety in consideration of any further evidence that would support additional charges in the case," Vancouver Police Const. Jana McGuinness said in an email to ctvbc.ca.

She did not respond to questions about whether the alleged wheelman in Randhawa's murder could find himself facing charges more than a decade after the slaying.

A man identified as Paul Aulakh is suspected of driving while Singh shot Randhawa as she sat in the back seat of the car. Her body was dumped on a quiet street, and discovered by a neighbour 45 minutes later.

Aulakh was never charged for his alleged role in the killing.

According to court documents filed by a U.S. district attorney this week, he stowed the bloody vehicle in a garage on East 61st Avenue.

It wasn't until three days after the murder that Aulakh called police, the documents allege, but by then, Singh had fled the country for Los Angeles.

Investigators have been searching for him ever since. Police came close to catching him in San Jose in 2000, but Singh was apparently tipped off and fled before an arrest could be made.

When he was finally arrested in San Jacinto last week, investigators discovered that Singh had married and fathered two young children. He'd also gained a significant amount of weight and grown a beard, altering his appearance so drastically that police needed his fingerprints to be sure they had their man.

Investigators say they believe that Singh's family on both sides of the border wasinstrumental in his 12-year-long evasion of justice.

The accused killer appeared in a Los Angeles court on Wednesday, and said he would not fight extradition to Canada.