UPDATE 2-Residents told to evacuate on risk of explosion at Texas chemical plant

plant@ (Adds residents near plant being told to evacuate)

Aug 29 (Reuters) - All residents within 1.5 miles (2.4 km) of a chemical plant in southeast Texas were told to evacuate as a "precautionary measure" on Tuesday because of the rising risk of an explosion, the local fire marshal's office said in a Twitter message.

Earlier on Tuesday, the owner of the plant, Arkema SA , said in a statement the situation at its Crosby, Texas, plant "has become serious" and evacuated all of its staff from the facility. (Reporting by David Shepardson in Washington and Bernie Woodall in Fort Lauderdale, Fla.; Editing by Peter Cooney)