Five persons were arrested from Titwala in Thane district for allegedly hatching a conspiracy to kill two local builders over a professional rivalry, police said on Monday.
The accused were picked up from a bungalow on Sunday evening where they had assembled allegedly to plot the killings, said inspector VR Andale of Kalyan taluka police station.
One of the accused, identified as Nasruddin S Shaikh, a builder, had a business-related dispute with Jakki Fakurde and Ravi Patil, also builders, and allegedly planned to bump them off with the help of others.
The remaining accused are identified as Zuber, Sameer Ahmed Khalil Khan, Afzal Ahmed Ayub Shaikh and Chandan Harish Mishra.
Police recovered a country-made revolver from Zuber, said Andale.