London-listed junior Solo Oil said it was left in the dark about development plans by Ruvuma project partner Aminex and is seeking clarification on the operator's fast-track proposals for the Tanzania licence next year.

Solo said on Friday it was “not made aware of, or consulted on” the upcoming plans Aminex has for the Ruvuma petroleum sharing agreement, where the companies are partners.

“The board of Solo was not made aware of, or consulted on, the inclusion of the fast-track items in the firm 2020 work programmes and budgets presented to the Tanzanian authorities and the associated expenditure requirements referred to below,” Solo said in a statement.