An alliance of the Shiv Sena, Nationalist Congress Party and Congress may form government in Maharashtra on the weekend, sources said today as a series of meetings took place in Delhi. The Shiv Sena's Sanjay Raut said letters of support from the MLAs of all three parties will be handed over to the Governor on Saturday. A joint meeting of the Sena, NCP and the Congress will take place in Mumbai to finalise the alliance. Sena chief Uddhav Thackeray and NCP's Sharad Pawar are likely to join the meeting for discussions on power sharing.