The incident was reported at the Ghatkopar police station at 1 AM today.
Sachin Sevankar, a contractual sweeper working with the BMC, had an argument with Irfan Nasir Shaikh (25) after the latter asked him for money, an official said.
In a fit of rage, Sevankar took a bottle of beer, broke it and allegdely slit Shaikh's throat, he added.
"Police arrested Sevankar when he was trying to flee the city," Ghatkopar station senior police inspector Vyankat Patil said.
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