Robin Roberts Robin Roberts

NBC reportedly told former Today co-anchor Ann Curry she could not tweet a message of support for her morning show competitor Robin Roberts after she was diagnosed with MDS, according to New York Magazine.

A report in New York magazine claims that Curry asked the network if she could tweet her well wishes to Good Morning America's Roberts, but NBC said no for fear she was trying to "aid the enemy."

Matt Lauer: We did not handle Ann Curry's Today exit well

NBC's Today and ABC's Good Morning America have a long-standing ratings rivalry.