WASHINGTON — A traffic stop along Interstate 66 near Rosslyn Tunnel nearly triggered a HAZMAT situation and resulted in two drugs arrests on Saturday, police said.

The incident happened at around 7 a.m., when Virginia State Police approached a disabled SUV on the side of the highway and noticed a suspicious liquid inside.

The substance was initially determined to be fuel, but traffic on westbound travel lanes were blocked as a HAZMAT crew investigated, according to Ashley Savage, a spokeswoman for Arlington police.

Police said two people were taken into custody after methamphetamine was found, Savage said.

The owner of the vehicle was released.

WTOP’s John Domen and Jacob Kerr contributed to this report.