A second computer technician charged with carrying out an electronic cover-up in the federal corruption case against State Sen. Vince Fumo has agreed to plead guilty.

Mark C. Eister, 38, of Camp Hill, who worked in Fumo’s Harrisburg office, will plead guilty on Tuesday before a federal judge, according to a document filed yesterday in federal district court.

Leonard P. Luchko, a computer aide who worked in Fumo’s district office on Tasker Street in South Philadelphia, pleaded guilty on Monday to one count of conspiracy and 28 counts of obstruction of justice.

Luchko is cooperating with prosecutors and will testify against Fumo. It’s unknown whether or not Eister has reached a similar plea deal with the government.