BOSTON (CBS) – The first full day of testimony in the trial of a Roslindale man charged with gunning down a convenience store clerk in Jamaica Plain began Monday.

Prosecutors said Edward Corliss entered the Tedeschi Food Shops in December 2009 wearing a wig, hat and scarf, demanded money from clerk, and then shot him.

In opening arguments Friday, prosecutors said Corliss was a “conniving criminal” and showed the jury surveillance video of the shooting.

WBZ NewsRadio 1030′s Kim Tunnicliffe reports.

Edward Corliss is charged in the 2009 murder.

Prosecutors said Corliss is the man that shot Dangol at close range during the robbery and fled in a getaway car driven by his wife.

The customer who found Dangol’s body testified on Monday.

“It sounded like a gurgle for lack of a better word. It was a gasp I guess is the best way I could describe it,” said the customer.

First responders also testified as well.

The defense lawyer, meanwhile, said the prosecution lacks sufficient evidence or eyewitnesses in the case.