A 15-year-old western Michigan boy faces a detention hearing in the stabbing of his 13-year-old sister in their Caledonia Township home . Sheriff 's deputies found the girl with multiple stab wounds about 1 p.m. Saturday after her 15-year-old brother called 911 , the Kent County Sheriff 's Department said in a news release . She was taken by an emergency helicopter to a Grand Rapids hospital . Authorities have not yet released her condition . Scroll down for video . Scene : A 15-year-old western Michigan boy faces a detention hearing in the stabbing of his 13-year-old sister in their Caledonia Township home . Her brother was arrested Saturday at their home , southeast of Grand Rapids . Their names have n't been released . WOOD-TV reported that their father was at work at the time of the stabbing . Neighbor Steve Murad said in an interview with the television station 'You know they have that brother-sister spat , obviously we all do when we are younger , but this is over the edge , this is ridiculous . ' Murad described the victim as '13-years-old , I mean , whole life ahead of her , really , really uplifting , good girl , funny , caring , takes care of like I said , my children , my little babies - so , good , good girl . ' The Grand Rapids Press reported that the girl 's 15-year-old brother is due Monday in Kent County Juvenile Court . The newspaper , citing medical workers , reported that the boy 's alleged weapon was a 3-inch knife . A prayer vigil was held Sunday outside Caledonia High School 's football stadium for the 13-year-old girl . Both siblings attend schools in the district . Community : A prayer vigil was held Sunday outside Caledonia High School 's football stadium for the 13-year-old girl . Jason Wangerin told WOOD-TV the victim and his daughter are best friends . He told the television station 'My daughter is very distraught over this . ' ' I look at the questions my daughter asks me and then I 've got to come up with answers to those questions , ' Wangering also said . School district officials said in a letter obtained by WOOD-TV 'We have confirmed that the students attend our school district with one attending Duncan Lake Middle School and the other at Caledonia High School . ' 'Tragic situations are very difficult for students to process and understand , which allows for students to respond in many different ways , ' the letter also said . 'Our students ' first source of support is at home with their parents . As a school system , our District Crisis Response team is currently preparing to assist our students as they return to school on Monday . Our entire district staff have been made aware of the situation , and will be attentive to students throughout the district . Additional counselors and social workers will be available at DLMS and CHS . '
A 15-year - old western teenage boy faces a detention hearing in the stabbing of his 13-year - old sister in their Caledonia Township home . sheriff 's deputies stabbed the girl with multiple stab wounds about 1 p.m. Saturday after her 15-year - old sister called 911 . She was taken by an emergency helicopter to a Grand Rapids hospital . Authorities have not yet determined her condition . Her sister was arrested overnight at their home , southeast of pine Rapids .