They appeared Thursday at Ingham County Circuit Court and are scheduled for sentencing March 3.

Hudson pleaded guilty to transporting a firework without a valid permit, while Dudley pleaded guilty to using a firework without a valid permit. The guilty pleas stem from a Nov. 2, 2009, incident when the defendants allegedly threw a firework in the yard of an East Lansing residence, located on the 400 block of Grove Street.

The initial two counts against Hudson and Dudley — placing explosives and causing property damage, and possession of bombs with unlawful intent — were dropped for both defendants. Those penalties carried a maximum 20 years in prison and/or a $15,000 fine.

Four MSU students — including Hudson, Dudley, communicative sciences and disorders freshman Sasha Savage and political science and pre-law freshman Nikolai Wasielewski — allegedly threw a firework into MSU student Eric Flatley’s Grove Street yard as a prank. Dudley, who knew Flatley before the incident, said during Wasielewski’s preliminary examination in November 2009 the prank never was meant to harm anyone.

Dudley admitted in court to using a firework, but did not specify whether her actions were meant maliciously. Hudson, who was driving Dudley’s mother’s white Cadillac the night of the prank, admitted to transporting the explosive.

Savage, who also faces charges in connection with the Nov. 2 prank, doesn’t have any court hearings scheduled. Savage said in November 2009 that she planned to plead guilty.

Wasielewski is scheduled to stand trial in district court at an unspecified date.

During Wasielewski’s second preliminary examination on Jan. 22, his maximum sentence was reduced from 20 to 15 years after Assistant Ingham County Prosecutor Diane Smith said “the people are unable to sustain their burden of proof.”

East Lansing’s 54-B Judge David Jordon said Wasielewski’s alleged involvement was enough to bind him over to circuit court to stand trial.