Sufder Ali, the son of the nabob who had gone with Chunda Sahib to Trichinopoly, returned, after its capture, to Arcot, where a new Dewan, or minister, Meer Assud, was appointed; who took every step he could to prevent the accomplishment of those ambitious designs which he seemed convinced his predecessor in office had formed. The Marathas had formerly been in possession of a great part of the Carnatic; and one of their chiefs had become Rajah of Tanjore, a small but rich principality, lying to the southward of the Cavery, and fertilised by its waters, and those of the Coleroon. Incited by the reigning rajah, and by the Hindu family who had been expelled from Trichinopoly, 10,000 of this nation, under Ragojee Bhonsela (A. D. 1740), invaded the Carnatic. In the first action with these plunderers, Doost Ali was slain, and his son, Sufder Ali, immediately assumed the title of nabob; but, dreading the results of the Maratha invasion, he sent his family and treasures for protection to Pondicherry. When the war with the Marathas was concluded, he took his family away; but Chunda Sahib left his, fearing, perhaps, the result of the intrigues, which were going on against him. These became too soon apparent; the Marathas retired; but, secretly excited by the court of Arcot, they soon returned, and surrounded Trichinopoly, which they took, after a siege of three months; and, having appointed one of their leaders, Morari Row, to be its governor, they sent Chunda Sahib, whom they had made prisoner, to be confined in a fortress near Sattarah. Sufder Ali, who was at this time (A. D. 1741) in great alarm at the apprehended resentment of the Soubahdar of the Deckan, to whom he had remitted little or no tribute, went, for security, to reside in the fortress of Vellore, pretending, at the same time, that he was in great poverty, and intended to proceed to Mecca; and, to give more currency to this last report, he sent his son and family to Madras, from whence he said he meant to embark. His minister, Meer Assud, is stated to have advised him to put his family and property under the protection of the English, from a conviction of the intrigues the French were carrying on at this period with Chunda Sahib, of whose ambitious views he continued to entertain the most serious alarm. The retreat of the Marathas had been purchased by the promise of a large sum, and every district of the Carnatic was heavily assessed to make up this amount. This assessment produced great discontent, and the principal rulers of districts, leagued with Mortaza Ali, in a conspiracy against the nabob, who was assassinated; and his treacherous relative and murderer, having distributed largesses to the army, proclaimed himself nabob, and marched to Arcot.