Holding talks with Home Affairs minister George Simbachawene, Dr Mwinyi said peace is a major factor considered by investors before deciding to start a business.
"My government will work closely with your ministry to ensure that peace and tranquility continues for not only the good of Zanzibar but Tanzania as a whole," he said.
President Mwinyi who came to office last year after the October General Election told the minister that efforts being made to strengthen peace in the Isles do not go to waste since a number of investors have already inked contracts with his government, and a number of investment deals are still being negotiated.
In January, Zanzibar and Oman signed a memorandum of understanding (MoU) for the construction of Mangapwani multipurpose port in Unguja North.
The project inked between the government of Zanzibar and the Oman Investment Authority involves the construction of berths for liquid bulk ships, containers, fishing vessels, natural gas offshore activities as well as backup infrastructure for rehabilitation of marine vessels.
And early last month, the Zanzibar government and Spanish company Tangen & Intertorco Group sealed a pact for carrying out a feasibility study and construction of a joint fishing port at Mpigaduri in Unguja and another port at Mkoani in Pemba.
For his part, Simbachawene assured President Mwinyi that the ministry which is a Union docket will do everything in its power to maintain peace and tranquility in the islands that hugely depend on tourism, thanks to its historical scenery and beaches popular with sunbathers.
The minister also used the opportunity to extend his condolences to the president following the death last week of Zanzibar First Vice President Seif Sharif Hamad.
The Isles' main opposition ACT-Wazalendo national chairman was early this month admitted at the Muhimbili National Hospital.
Hamad, popularly known as Maalim Seif, was a permanent fixture in Isles politics, contesting the presidency but narrowly and contentiously losing since the first multi party elections in 1995 until last year’s General Election.
He joined the Government of National Unity (GNU) after the hotly contested 2010 General Election until the next polls late 2015. On 18th March 2019 he shifted from the Civic United Front (CUF) and joined ACT-Wazalendo, from which he contentiously lost the recent polls, then joined another GNU.