Police reported that at least 27 people, including 18 children, were killed Friday morning during a shooting at Sandy Hook elementary School in Newtown, according to the Associated Press. Officials identified the gunman as Adam Lanza, 20, who died at the scene, CNN reports.

As the shocked community begins to mourn, a number of organizations are prepared to help with counseling services, bereavement therapy and blood donations.

Find out how the area's nonprofits are getting involved in the relief effort and how you can help:

Newtown Youth and Family Services 
Newtown Youth & Family Services, Inc., a nonprofit mental health clinic, will be open Saturday and Sunday from 9 a.m. to 4 p.m. for emergency counseling for families, community members or staff involved in the Sandy Hook 
Elementary school tragedy. All donations made to the organization will benefit those affected. Find out how you can help here.

Newtown Parent Connection
The Newtown Parent Connection, a nonprofit that addresses issues of substance abuse, also offers bereavement group counseling on the first Wednesday of every month. The organization told The Huffington Post that it's going to try to bring in additional counselors to accommodate the needs of those affected by the Sandy Hook shooting. Find out how you can help here.

The American Red Cross
The American Red Cross of Connecticut immediately responded to the shooting scene and provided more than 50 units of blood platelets and plasma to the Danbury Hospital, where some of the victims were transported, spokesperson Melanie Pipkin told the Huffington Post. The aid organization has also distributed food and water to first responders and is setting up a family reception center that will provide initial grief counseling. The aid organization is not seeking blood donations at this time and doesn't anticipate any additional need. Learn about how you can help here.

This story is developing. Please check back for updates on how to help.

CORRECTIONAn earlier version of this story misidentified the gunman after police had previously named the suspect's brother as the shooter.