Microblogging service Twitter’s CEO Dick Costolo lobbied against ousting executive chairman Jack Dorsey in a 2008 power struggle, according to Chris Sacca, a former Google executive turned investor.

Sacca was quoted by Reuters as saying that Costolo – another Twitter investor in 2008 – urged the board to keep hold of Dorsey, who is widely credited with inventing the 140-character messaging service.

According to PandoDaily, a technology blog, Sacca said Costolo told board members that "you can’t just send the f- inventor of the product on his way."

In October 2010, Costolo was appointed as Twitter’s CEO succeeding the company’s co-founder Ev Williams.

Sacca said that Williams left the company under political pressure and Costolo assumed the top role after his departure, and brought Dorsey back to Twitter as executive chairman in March, 2011.

Sacca said: "I’m sure Jack still holds grudges, and he should."

In 2010, Dorsey founded payments firm Square and it came to news earlier in October this year when the New York Times reported that he had been pushed out of Twitter for a second time after employees complained that he was difficult to work with.

Dorsey responded publicly by saying he had trimmed his role at Twitter as part of a transition process pre-arranged with Costolo.