Police breifly stopped traffic to investigate a suspicious package outside the Roxbury Crossing T stop Sunday morning.

Officers responded to the package, an unattended backpack left outside the Orange Line stop, around 8:23 a.m. and gave the all-clear by 9 a.m., police spokesman Stephen McNulty told Metro.

Bomb squad investigators determined the bag did not pose a threat, Mcnulty said.  

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McNulty called blocking the road at Tremont Street and Columbus Avenue "precautionary."

Police did not have to detonate the package, as they did when a suspicious piece of luggage was left near a Homeland Security SUV Dec. 4.

In September, police arrested a man wearing a Guy Fawkes mask who allegedly making bomb threats at Back Bay station, which is also on the Orange Line.