Brooklyn Mother, Four Children Allegedly Slain by Jealous Cousin: A home turned into a slaughterhouse greeted Yi Lin Zhuo on Saturday night as he returned home to find his wife and four small children slain, allegedly by a cousin envious of his success in America. Michael Daly reports.

On Saturday evening, 37-year-old Qiao Zhen Li tried to telephone her husband, Yi Lin Zhuo, at his job to tell him she was becoming alarmed by his cousin, who had seemed to grow increasingly unstable while staying with them in their Brooklyn apartment, where they were raising their four young children.

The cousin, 25-year-old Mingdong Chen, had come to America illegally in 2004 and had held a series of restaurant jobs, but had been repeatedly fired after a week or two. He had most recently been working out of state, most likely in Chicago, but had been fired once again. He had shown up at the Zhou house some eight days ago, as he had on earlier occasions, broke and in need of shelter.

Chen is said to have seemed more resentful than grateful, and he had spent entire days doing nothing when he could have been getting another job and a place of his own. One relative would later report that Li had finally told him he would have to leave.

Li was now so worried by Chen that when she was unable to reach her husband, she called her mother in China. Her mother then telephoned a daughter-in-law in New York, who went with her husband to Li's first-floor apartment on 57th Street in Sunset Park. They arrived around 10:45 p.m. and pounded on the door.

Chen answered, covered in blood but with no apparent injuries. The daughter-in-law called 911,...