The family of slain UW-Madison student Brittany Zimmermann and the Madison Police Department urged residents Thursday to remember “the day Brittany died” and come forward with any information that may help investigators bring her killer to justice.

The Zimmermann family also announced the establishment of The Brittany Zimmermann Reward Fund, a donation-driven collection offered in exchange for information leading to the arrest and conviction of her killer.

The fund, currently offering a reward of $5,000, will accept donations through the Marshfield Medical Center Credit Union and raise the reward as the investigation continues.

“Brittany had a huge commitment to her family, to her community, whether that be Madison or back home in Marshfield,” said Kim Heeg, Zimmermann’s aunt. “And so we are here again to ask some support of this community.”

Zimmermann was found dead in her apartment in the 500 block of West Doty Street in April. No suspects have been named in her death, though the police investigation continues.

Madison Police Chief Noble Wray urged students to come forward with any information they might remember about the day of Zimmermann’s homicide.

“What we are asking today is that students and other Madisonians take themselves back to the day Brittany died,” Wray said. “So if you were on Bascom Hill, State Street, University Avenue, Main Street, Johnson Street, Bedford or West Doty during [mid-morning of April 2]—we ask that you think about anything you might have seen that looked at all out of the ordinary or suspicious.”

Police say they remain “determined and dedicated” to finding Zimmermann’s killer, but maintain community assistance is essential.

“We firmly believe there are people in this community who have information that could crack this case,” Wray said. “We really do need your help.”