ea dorchester was killed possibly by as many as seven gunshots. no arrests have been made. tonight, the fbi is offering up to 20,000 dollars for information leading to the arrest of an alleged ms-13 gang member. this is efrain vasquez-yanez. he's charged with rico conspiracy and conspiracy to distribute cocaine. the 34-year-old was last seen in everett and is believed to be in the greater boston area. the fbi warns he should be considered armed and dangerous. ben: new drought concerns in reservoir where water levels are at dangerously low levels prompting the city to declare a stage three drought emergency. newscenter 5's shaun chaiyabhat is live to explain what that means, shaun? reporter: the drought is so bad, there's a mandatory ban on all outdoor watering. and now, the city is leading by example. by shutting off fountains like this. startling images, of a lake nearly dry. city leaders say they haven't decades. >> water levels are below 55%. this time of year they're typically at 82%. that's significantly below where we would normally be. reporter: a stage 3 drought eme