tuesday will mark one year since that shooting, and the "post" says naomi alexis initially wanted to talk about her brother and his mental illness and the issues leading to his rampage. but she cancelled that interview and only answered a few e-mails and texts. >>> a new development tonight in the rush to meet the school vaccine deadline in maryland. state health officials are now considering a delay. and they tell the news4 i team that health administrators are meeting with the attorney general this afternoon to figure out a way to do so. scott macfarlane broke this story online today and joins us now in the studio with an update. >> reporter: at least 1,050 kids face being barred from the classroom monday morning because they don't have the shots or the paperwork to prove it. hundreds more in frederick and prince george's counties will be banned from their school buildings come tu maryland state law requires every seventh grade show proof of a t-dad and me anyone joe dock california vaccine. they have been race to go get the vaccinations, but there is growing fear there will be a h

naomi alexis, the sister of gunman aaron alexis tells the "washington post" she hopes the victims' families are healing. the post says she wanted to talk about mental health issues had your brother suffered but cancelled the interview. this tuesday marks one year since her brother, a navy contractor, killed 12 people before police shot and killed him. w clues still coming in tonight on a missing mother, wanted in the disappearance of her two young children. there have been several sightings of kathryn hoggle. she left the chick-fil-a on monday after her husband realized their two youngest children were missing. she was also spotted near century bouleva in the same area and in one of the newest sightings, rode a bus to the lake forest mall. kristen wright is live in germantown with more on the desperate search. >> reporter: well, chris, a vigil is planned for tomorrow here at the chick-fil-a where catherine hoggle was last seen. the vigil will happen tomorrow nit at 8:00. meanwhile, a lot of new developmen in the search for catherine hoggle and her children. but still, no sign of those child