Google Inc's profit grew roughly 36 percent in the second quarter, even as spending at the Internet search leader continued to rise.

Google shares were up 11.7 percent at $590.96 in after-hours trading.

Google posted net revenue, which excludes fees paid to partner websites, of $6.92 billion in the second quarter, compared with $5.09 billion in the year-ago period.

Net income in the second quarter was $2.51 billion, or $7.68 a share, up from $1.84 billion, or $5.71 a share, in the year ago period. The company's operating expenses were up 49 percent year-on-year at $2.97 billion.

(Reporting by Alexei Oreskovic; Editing by Richard Chang)

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