51.   A neighbor reported hearing two explosions, and by the time firefighters arrived, the aquarium was engulfed in flames.

52.   After firefighters arrived, there were two explosions, trapping some of them inside the building, firefighter David Feddern said.

53.   Before firefighters arrived, neighbors reported seeing smoke coming from the house and alerted the suspect, but he said everything was fine, according to authorities.

54.   By the time firefighters arrived, fire could be seen in every window of the house, said Maine Fire Chief David Silverstein.

55.   By the time firefighters arrived, flames had consumed most of the factory and the attached living quarters for employees and their families, Xinhua said.

56.   By the time firefighters arrived, the fire had burned itself out, Wan Alkap said.

57.   By the time firefighters arrived, flames covered the back of the two-story building and heavy smoke filled the inside.

58.   By the time firefighters arrived, heavy smoke was billowing from the eaves of the one-story home, said Patrick Miller of the Indian River Fire Company.

59.   By the time firefighters arrived, the farmhouse was engulfed in flames.

60.   By the time the firefighters arrived, the whole building was already in flames.