UPDATED | March 27, 2017 5:20 PM

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DALLAS (CBSDFW.COM) — A bomb scare forced a partial evacuation of the VA Hospital in Dallas Monday around 2:00 p.m.

Around 4:30 p.m. authorities confirmed there was no explosive found inside after someone found a suspicious item in the radiology lab.

It turned out to be an oxygen tank connected to some wires leading to a box.

A source inside the VA has told CBS 11’s Jason Allen shortly the evacuation started inside one clinic, then expanded to the floor, then to a larger area of the main building.

Jason Allen has also confirmed through sources that there is a “suspicious device involved.” No other details were available about that device at this time.

From Chopper 11 people could be seen standing outside the hospital. Several police cruisers could also be seen lining the streets in front of the hospital.

Sources say that staff and all outpatients have been evacuated. Other patients are safely in rooms with doors closed.

At about 3:25 p.m. from Chopper 11 we could see several officers waved over to an entrance of the hospital with emergency lights flashing. A large Dallas Police van was also seen at that location with several officers nearby.

At about the same time, a Dallas HAZMAT truck and at least two fire trucks also could be seen entering the area. It is not know at this time if HAZMAT was on scene as a precaution or for a specific reason.

CBS 11 crews at the scene report that the incident appears to be occurring near the pharmacy area of the hospital.

Everyone with the exception of the most critical patients have been moved from the hospital.

There have been no reports of injuries.

A  spokesperson for the VA Hospital told CBS11 the suspicious device was found in the radiology department.

The Dallas bomb squad is on the scene evaluating the situation.

Second shift employees are being told to still report to work.

Some outpatients ended up having appointments cancelled as a result of the disruption.

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