FARMINGTON — Maine prosecutors have dropped a domestic assault charge against state economic adviser Lawrence Dwight Jr., citing insufficient evidence.

Dwight, of Wilton, resigned from the Maine Consensus Economic Forecasting Commission following his arrest last month. Gov. Paul LePage said at the time he expected Dwight to leave the commission while the legal issues regarding his arrest are pending.

Now, the Franklin County District Attorney’s office says it won’t prosecute.

It was not clear Thursday whether Dwight will return to the commission, on which he held an at-large seat appointed by the other members.

Dwight’s attorney, Kevin Joyce, said the arrest stemmed from a “normal marital spat.” Police were called when a family member tried to reach Dwight’s wife but couldn’t reach her because her phone was recharging.