Tata Motors, one of India's leading commercial vehicles and passenger car makers, said Friday the company's April-June net profit rose a better-than-expected 22 percent over a year-ago period on improved sales.

The company, an arm of the diversified business conglomerate Tata Group, said the net profit in the quarter ended June 30 touched Rs.2.73 billion as compared to Rs.2.23 billion logged in the same period of the previous fiscal year.

Tata Motors' revenue in the first quarterly period posted a growth of 8.6 percent to Rs.38.78 billion.

Domestic sales of the company's commercial vehicles in the April-June quarter declined seven percent to 37,228 units.

The company said the uncertainty caused by changes in emission norms and the resultant shortages of some critical components impacted sales during the April-June quarter.

Passenger vehicles' domestic sales stood at 41,191 units, an increase of a marginal one percent of the same quarter in the previous year.

Mumbai-headquartered Tata Motors exported 9,073 vehicles during the quarter, a strong growth of 113 percent.

Shares of Tata Motors closed with a gain of 0.4 percent on the Bombay Stock Exchange at Rs.480.95 on fresh institutional buying interest.