US police intensifies search for killer of MIT professor

US Police have intensified their search for a suspect in the killing of professor Nuno F.G. Loureiro at the Massachusetts Institute of Technology, (MIT) two days after he was shot at his home outside Boston.

Loureiro, a 47-year-old physicist and fusion scientist, was shot Monday night at his apartment in Brookline, Massachusetts. He died at a local hospital on Tuesday.

The FBI have said it doesn't know of any connection to the professor's shooting and a recent deadly shooting at Brown University just 80 kms away from MIT.

People gathered Tuesday night outside Loureiro's home to honour him, some holding candles.