On Monday, the Sena, without directly naming BJP, claimed that only "one party" possessed "unlimited money" and had come to power in Goa and Manipur despite being "rejected by the people".
Sena also alleged that the party was using that money to "try and uproot" the Shiv Sena and humiliate Uddhav Thackeray.
"Even if people face recession after demonetisation, one party is on an upturn and came to power in Goa and Manipur despite being rejected by the people," an editorial in Sena mouthpiece Saamana said.
The editorial said people were watching which party "indulges in horse-trading backed by the power of money".
"The same money was used to try and uproot the Shiv Sena as well," it alleged.
Sena claimed that the party kept "boasting" that the government in Maharashtra would be stable even if the Sena withdrew its support to it.
"This boasting is being done on the back of unlimited money only. It is surprising that nobody approaches the Enforcement Directorate to seek a probe against them," the Sena said.
Shiv Sena further alleged that attempts were also being made to seize power in the Brihanmumbai Municipal Corporation (BMC) using the money of traders.