Monticello, Ill.-based First State Bank and Trust Company is acquiring Senath State Bank in Missouri..The deal was announced March 20. As of late January, First State Bank and Trust had more than $500 million in assets, $455 million in deposits and 10 branches. Senath State Bank had $105 million in assets, $89 million in deposits and three branches. The price of the deal was not announced.Performance Trust Capital Partners was financial adviser to First State Bancorp.