Phoenix, Minneapolis ? Two sets of sextuplets were born in different states less than a day apart.

Brianna Morrison, 24, who used fertility drugs, gave birth just before midnight Sunday in Minneapolis. About 10 hours later, Jenny Masche, 32, who used artificial insemination, gave birth Monday in Phoenix by Caesarean section, the first successful sextuplet delivery in Arizona.

Morrison’s four boys and two girls were premature, delivered after just 22 weeks. Doctors at Children’s Hospital listed them in critical condition Monday afternoon, with weights ranging between 11 ounces and 1 pound, 3 ounces.

The Masche sextuplets – three boys and three girls – were almost 10 weeks premature, and all but one weighed less than 3 pounds. On Monday, five of the six were on ventilators to help them breathe.