The Telecom Regulatory Authority of India on Tuesday said it is examining the issue of hike in roaming charges by some mobile operators.

"Last week, some operators had raised the roaming tariffs, and we are looking at it. We are examining the issue," Trai chairman Pradip Baijal said in New Delhi.

Earlier this month, cellular operators like Airtel and Hutch hiked the roaming charges for post-paid customers by Rs 1.50.

As per the new roaming rates, mobile to mobile calls up to 200 km would cost Rs 3.49 per minute against Rs 1.99 earlier and for distance over 200 km, the new tariffs are Rs 4.49 per minute against Rs 2.99.

Similarly, a post-paid roaming customer calling a landline would pay Rs 4.49 per minute for distance up to 200 km against Rs 2.99 earlier, and Rs 5.49 for distance slab of 200-500 km compared to Rs 3.99 per minute charged earlier.

For distance above 500 km, the roaming charges have been hiked to Rs 6.49 per minute compared to Rs 4.99 per minute earlier.