An Edgerton, Missouri man charged with murdering his sister, three-month-old nephew, and grandparents, and then allegedly burning down the home where they lived together could face the death penalty.

In a court filing Thursday, Platte County Prosecutors gave notice of their intent to present “aggravating circumstances” to seek the death penalty against Grayden Denham.

As we reported earlier, a grand jury returned an indictment against Denham, charging him with four counts of first-degree murder and four counts of armed criminal action.  He is also charged with 2nd-degree arson, tampering with evidence, stealing a motor vehicle and animal abuse.

Prosecutors are expected to lay the groundwork to seek the death penalty in a hearing scheduled June 1 before Platte County Circuit Judge James Van Amburg. The judge earlier denied a request to disqualify the office of the Platte County Prosecutor and appoint a special prosecutor in the case.

A grand jury returned an indictment on June 24 alleging Denham shot his sister, Heather Ager, 32, his three-month-old nephew Mason Schiavoni, his grandmother, Shirley Denham, 81, and his grandfather, Russell Denham, 82. Their bodies were found burned outside their residence on Buena Vista Road in Edgerton on February 20. Fire destroyed the home. A dog had also been shot and burned.

Denham was found in Arizona driving a 2012 Nissan Versa believed stolen from the home. The vehicle’s Missouri license plates had allegedly been removed and replaced with stolen Oklahoma license plates, according to the prosecutor’s office.

Denham, 24, is being held in the Platte County Jail, unable to post $4 million cash bail.