MCI: At least one dead in Maryland bus wreck.

From WUSA9.com:

One person is dead after a commercial “Wolf’s” bus has overturned under the northbound sky ramp onto the I-270 spur, according to officials.

Fire rescue spokesman Captain Oscar Garcia tells 9 News Now that the accident happened at about 4:02 pm, and at northbound lanes of 270 spur between Rockledge and Montrose roads.

Garcia says the preliminary information is that the bus went off an area of the sky ramp.

Garcia says crews on the scene are assessing 10-15 patients, at least two or three that have serious, life threatening injuries.