Billionaire Warren Buffett's Berkshire Hathaway Inc. on Tuesday named Stephen Burke, the chief operating officer of Comcast Corp., to its board of directors.

Buffett said in a statement that Burke, 51, is "keenly interested" in the company.

Burke also is president of Comcast Cable Communications, a unit of Comcast.

Berkshire did not say if Burke was replacing anyone on the board. A representative could not immediately be reached for comment.

Berkshire owns a small stake in Comcast _ 12 million shares, which amounts to less than half of a percent, according to CapitalIQ.

Class A Shares of Comcast slid 14 cents to $17.23 in afternoon trading.

Berkshire's Class B shares slipped $1.94 to $3,298.11.