Left Temporal Lobe Surgery

My son had surgery on 11th Feb, he had a 15 second seizure 17th & 18th Feb, then today 21st , a seizure tonic clonic again jerking lasted 15 seconds followed by eyes ticking to the right for further minute. Our concern is this post op seizure or does it mean surgery hasnt worked? His epileptic seizures were right side focal, the mri & eeg post checks showed activity on left temporal lobe hence surgery. Procedure completed at GOSH.