MAPLE GROVE — A man is in police custody on suspicion of the murder of his grandmother, a Worthington resident who was visiting family in the Twin Cities.

Maple Grove police responded July 8 to a report of a domestic incident at a local residence. Officers located three adult female victims with serious head injuries. Police were told that David Ekers, 34, of Plymouth, had attacked the victims with a wrench.

One of the victims, Darlene Broste, 86, of Worthington, had injuries so severe that medical staff considered them "non-survivable," according to the criminal complaint. Family members decided to extubate her early July 9 after the attack, and she died as a result of multiple skull fractures and multiple intercranial bleeds.

The other two victims remain in critical condition on ventilators, and it is unknown if they will survive.

In an interview with police, Ekers allegedly said that he had intended to kill all three victims and that he planned the attack about an hour in advance. He reportedly stated that he wanted to kill the victims because he did not want to be on psychiatric medication or return to the hospital for mental health treatment.

Ekers was charged with three counts of second-degree murder, indicating intent but not premeditation. If convicted, he faces a maximum sentence of 40 years in prison. He is being held in Hennepin County Jail on bail set at $1.5 million.