A Queens man is facing murder, arson and weapons charged for allegedly fatally stabbing his mother-in-law and knifing her teen son in a drunken rage this week, authorities said.

Weisheng Chen was hit with six counts of murder, four counts of weapons possession, two counts of arson and four counts of assault Saturday for the alleged rampage , during which he also set their Flushing home on fire, cops said.

Chen, 27, was reportedly going through a divorce and had been drinking before launching the deadly assault just before 4 p.m. Thursday at the home on Smart Street near 45th Avenue in Flushing. 3

He allegedly stabbed Qiujin Shi, 50, then turned the knife on Shi’s 17-year-old son, stabbing him in the face and armpit, before lighting a mattress ablaze and slitting his own wrists,

See Full Page