NORMAN, Oklahoma - Emergency crews are responding to two separate wrecks involving multiple vehicles in the northbound lanes of Interstate 35 in Norman.

According to authorities, crews are responding to the wrecks on I-35 northbound at Tecumseh Road. At least one lane of traffic is blocked.

Bob Mills SkyNews 9 HD flew over the scene. Pilot Jim Gardner reported that two vehicles, including a pickup truck, were involved in the first wreck. The pickup driver had to be extricated from the vehicle. 

Three vehicles were involved in the second wreck, also in the northbound lanes of I-35. 

Traffic is backed up in the area. Stay with us for updates.