A Brooklyn man was stabbed to death by his own cousin during an argument over the weekend, cops and sources said Monday.

Norberto Soto, 44, allegedly stabbed Ramon Marrero multiple times in the torso with a kitchen knife on Sunday at around 10 a.m., police said.

The attack came after the two men were arguing in their apartment on Ocean Avenue near Avenue H in Flatbush, police said.

Marrero, 54, was taken to Kings County Hospital, where he died.

Soto, who was previously arrested on an assault charge out of Philadelphia in 2014, was charged with second-degree murder.