A high-speed chase that continued for miles along the Indiana Toll Road ended in the arrests of four people early Thursday.The chase began near Cline Avenue in Gary about 2 a.m. EST, when the vehicle was first seen veering into a barrier.But the driver refused to stop, and the chase didn’t end until the vehicle was in LaPorte County, Indiana State Police at the Toll Road saidThe trooper who followed the eastbound vehicle reported speeds of up to 90 mph as he gave chase. There was little traffic as the car continued heading east into LaPorte County, police said in initial reports. And it was only at the 38 mile marker, just inside the county line, that the vehicle was finally disabled with stop sticks. During the pursuit, the trooper observed a significant amount of a white powder being tossed from the windows. Once the vehicle was stopped, police working under utility lights continued looking for evidence along the highway berm, near the 27 and 28 mile markers.Officers were still there nearly 90 minutes later as they continued the investigation.“It’s going to end up being drug charges,” ISP staff at the Toll Road told SBT24/7 News. Police expect to release more information about the case later in the day. For any further updates, stay with WSBT-TV and WSBT Radio News or check with our SBT24/7 News partners at SBT24/7News page . For any further updates, stay with SBT24/7News page or check with our SBT24/7 News partners at WSBT-TV and WSBT Radio News.