More on that hazmat incident near University of Texas in Austin earlier today:
One dead, 11 injured in gas leak near UT

One person was dead and 11 others were injured Wednesday afternoon after a poisonous gas leaked at high-rise apartments near the University of the Texas campus.

Authorities said the name of the dead man, who was in his 20s, was being withheld pending notification of next of kin. Attempts to resuscitate him at the scene were unsuccessful, fire officials said.

Austin Fire Department Batallion Chief Palmer Buck said fire units were called to the 21 Pearl Apartments in the West Campus neighborhood about 3:20 p.m. after residents reported finding a man unconscious and a strong odor permeating parts of the 136-unit building.

Officials said the odor appeared to be hydrogen sulfide, a chemical that can release fatal fumes.

snip

Buck said a warning sign was found outside the dead man’s apartment that read: “Stay out. H2S” - the chemical symbol for hydrogen sulfide.