FLINT, MI -- It's not only bottled water that's driven a wedge between Gov. Rick Snyder and Mayor Karen Weaver.

The two officials are also wrestling over control of a $6.1-million reserve water crisis fund -- money appropriated by the Michigan Legislature for Flint but unspent so far.

Both Weaver and Snyder said the reserve fund was discussed when the two met Monday, April 16, shortly before the meeting ended after about 35 minutes.

The Governor's Office says Snyder told the mayor that $4.1 million from the fund could be used to settle a lawsuit against the state, Genesee Intermediate School District, and Flint Community Schools.

The lawsuit was filed by the American Civil Liberties Union and others, and representatives for the plaintiffs last week announced they had reached the settlement with the state, which had agreed to pay part of the cost of a registry for Flint children affected by the water crisis.

Weaver made headlines Monday when she threatened to file a lawsuit against the state after it stopped paying the bill for bottled water distribution in Flint this month.

But the mayor said the governor also "backed up off of (his) word" when he told her of plans to use the reserve fund to pay off the legal settlement.

"This is money that's been set aside for the city of Flint, and we had other plans as to how we might want to use that money to benefit the people," Weaver said. "But he told us ... that money was going to be used for something different ... At that point, the meeting ended."

The mayor and governor emerged from their Monday meeting in Lansing with different impressions of what transpired and within hours, Weaver threatened to sue the state.

The next day, the Governor's Office canceled a meeting of the Flint Water Interagency Coordinating Committee that he created two years ago to address water issues here.

Anna Heaton, Snyder's press secretary, called Monday's meeting a "candid and open discussion about continuing to move Flint forward now that the water quality has been fully restored and confirmed by independent testing."

Heaton said Weaver "asked for the $6.1 million (reserve fund) to be handed over to the city" during the meeting.

"The governor said it was already possibly being used for the $4.1 (million) for Flint schools, and that she could ask the Legislature how they plan to use it, since it is up to them," Heaton said in an email to MLive-The Flint Journal.

Kristin Moore, a spokeswoman for Weaver, said the governor never specified what the $4.1 million would be used for -- just that it was going to the state Department of Education.

The Flint City Council meanwhile has scheduled a special meeting for Wednesday, April 18, to discuss a resolution to recommend the governor and the State Budget Office recommend a legislative transfer that would allow the full $6.1-million be used to provide a credit for residential water and sewer bills in Flint.

State Senate Minority Leader Jim Ananich, D-Flint, said the state should find another source to pay off its settlement debt and use the $6.1 million for city residents.

State taxpayers funded the reserve fund for Flint in 2016, a supplemental appropriation to which there have been additional deposits and withdrawals since, according to Heaton.

Money from the reserve fund has been used for bottled water and pipe replacement, but the purpose was designed to flexible and available for unexpected expenses related to the water crisis, she said.

The ACLU lawsuit was filed in 2016 and is based on a claim that school officials failed to provide service for Flint children and parents. It alleged violations of federal civil rights laws in relation to the water crisis.

Money from the $4.1 million settlement will be used to boost the Flint Registry, a program that's also funded by a four-year, $14.4-million federal grant.