Saturday night was a great night for a lot of sports fans who finally got to see Floyd Mayweather and Manny Pacquiao fight. But unfortunately, it turned into a tragic night for two brothers from West Philadelphia.

According to ABC 30, a 52-year-old man stabbed his 36-year-old brother to death at around 1:30 a.m. on Sunday after the two got into a heated argument following the Mayweather/Pacquiao fight. Police haven't revealed exactly what the two men were arguing about. But the older brother allegedly pulled a knife out and stabbed his younger brother several times. The younger brother was pronounced dead a short time after police arrived.

Check out the clip above for more details about this incredibly sad story.

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[via ABC 30]