Dubuque police have jailed a resident alien who’s a native of the Asian nation of Sri Lanka.32-year-old Umesh Heendeniya (you’-mesh hen-dee’-yah) was caught throwing toxic chemicals into the Mississippi River at a Coast Guard pier in Dubuque. He’s charged with unlawful disposal and carrying two handguns without a permit. Heendeniya was seen throwing paint, power steering fluid and cleaning chemicals into the water. If convicted, he could face up to two years in prison and a fine.