Jim Sheridan said there should be an inquiry into how the two girls were able to leave the Good Shepherd unit unsupervised.
He said: "The relatives and friends of these young girls will be suffering unimaginable horror and grief.
An MP called for an inquiry today after the deaths of of the two teenagers in an apparent suicide pact.
Jim Sheridan said there should be an inquiry into how the two girls were able to leave the Good Shepherd unit unsupervised.
He said: "The relatives and friends of these young girls will be suffering unimaginable horror and grief.