Alameda County sheriff's officials said Thursday that five people who were in a car that sped away from deputies and then crashed into a truck in Hayward early Wednesday allegedly had been involved in an armed robbery less than an hour earlier.
Sgt. J.D. Nelson said that the suspects' alleged involvement in the robbery appears to be the reason they tried to speed away from two deputies who attempted to stop them after their Mazda sedan was driving erratically near Mission Boulevard and Smalley Avenue.
Nelson said the suspects confronted three victims at gunpoint in a residential neighborhood near Whitman Street and Cody Road at about 11:30 p.m. Tuesday.
He said two men got out of the suspects' car, with one man pointing a gun at the victims and the other man rifling through their belongings, taking their wallets and other items, such as cell phones.
According to Nelson, the driver of the getaway car was 22-year-old Leo Olguin of Hayward, who was on parole for a carjacking conviction.
Nelson said Olguin sped off when the deputies tried to stop him around 12:15 a.m. and ran through two red lights before crashing into a Safeway truck at the intersection of Foothill Boulevard and A Street, virtually shearing off the top of the Mazda.
Olguin sustained only minor injuries, but his two male passengers were killed and two female passengers suffered serious injuries, according to Nelson.
He identified the male passengers as 17-year-old Andrew Falcon of Livermore and 18-year-old Dominic Hall of Hayward.
Nelson said Falcon and Hall were the ones who directly confronted the robbery victims but it's unclear which one pointed a gun and which one took the victims' possessions.
Olguin's blood-alcohol level was 0.09, which put him above the legal limit for drinking and driving, according to Nelson. In addition, a gun was found in the Mazda.
Nelson said authorities also believe that Olguin fled from police in Castro Valley on Dec. 11, when deputies who were pursuing him gave up their chase because he was driving at a high rate of speed and driving conditions were difficult because it was raining.
He said police later found the suspect's vehicle after it had been involved in a minor collision and they found a Santa Rita Jail armband with Olguin's name on it.
The victims in the robbery late Tuesday night didn't notify police because they were afraid that the suspects were gang members who might come after them if they squealed, Nelson said.
Sgt. David Dickson declined to say if all the suspects were gang members but he said the sheriff's gang unit has had "numerous contacts" with Hall.
Dickson said Olguin is being held without bail at Santa Rita for violating his parole while the Sheriff's Department and the Hayward Police Department conduct an extensive investigation into the robbery and the crash.
He said investigators will present the case to the Alameda County District Attorney's Office to press charges either late next week or the first week in January.
Nelson said authorities haven't yet decided if they will pursue charges against the two women who were in the Mazda during the crash and allegedly during the robbery.