Shawn D. Miller, a Citigroup Inc. managing director who was global head of environmental and social risk management, was found dead in his New York apartment after suffering a neck wound, police said.

Miller, 42, was found unconscious two days ago in the bathtub of his Greenwich Street apartment in lower Manhattan with a neck laceration, the New York City Police Department said in a statement. Medics declared him dead after responding to an emergency call at 3:11 p.m. and investigators are waiting for the medical examiner to determine a cause of death, police said.

The New York Post reported that Miller’s throat was slashed and that no knife was recovered, leading authorities to suspect foul play. The Wall Street Journal, citing a law enforcement official, reported that police are seeking to talk with a man who was seen in the elevator with Miller before 6:30 p.m. on Nov. 15 and appeared to have a dispute with him.

Miller “was highly regarded at Citi and across the financial services industry as a thought leader and tireless advocate for environmental and sustainable business practices,” bank executives wrote in a memo to employees in his division. “He will be greatly missed by all who knew him.”

Doorman’s Discovery

Investigators didn’t find weapons or signs of forced entry, police said. The building’s doorman found Miller after his boyfriend said he was unable to reach him, police said.